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英语过去式作文,My busy day.

2023-08-19 07:40:08
共4条回复
黑桃云

Yesterday I got up late, because my alarm clock didnu2019t go off. By the time I woke up, it was 10 ou2019clock. I rode my bike to school. By the time I got to school, I realized it was Sunday today. Then I went to my friendu2019s home and talked with her. I ate dinner with my grandparents. In the end I got to home and watched TV, late on, I went to bed.

What a busy day it was!

wio

I had a busy day .On this day morning I cleaned my room and did my homework . On this day afternoon I played tennis .on this evening i cooked and watched TV. This is my busy a day .

陶小凡

My busy day

On Saturday morning I piayed tennis , on Saturday afternoon I went to the beach , and on Saturday night I went to the movies.

CarieVinne

My Busy Day>

Here begins the tale of my day of many mods. I am going to withhold the names and location of where I got my work done, since the Midwest is conservative, and the city where I got my work done has outlawed scarification, and I don"t want to get anyone who helped me to get into any trouble for a good deed they did.

I don"t claim to be any less crazy than any of you who submit to this site (not that I"m passing judgment), and my times of turmoil have had their effect on me. At one of my craziest times, about a year ago, I went through a cutting phase and did about 50 cuts with razor blades, obviously not the smartest thing to do. From that exposition, the most prominent scars were two large ones on my upper arms. They are approximately eight inches long and between 1/4" to 1/2" thick. I wanted to take control of them and turn them into something beautiful, and not let them have control over me. I don"t want them to be a reminder of how crazy I can be; I want them to be a reminder, a beacon of how I am in control of my body, my actions, and my life.

I worked at a piercing/tattoo parlor and I was moving, so I needed to have all of my work done before I left. I was adding to the scars on my arms, branding around the scar on my right arm, and scalpeling around the scar on my left arm, getting my guiche pierced, and finishing a large tattoo on my right thigh.

The day of my mods, I was very excited, nervous, and a bit scared. I made sure to eat plenty of food for lunch; I knew I was in for a long day. My one concern was that, since I was moving, I had gone out with a friend the night before, and was a bit hung over. But I was going to stop because of that. I got to the shop a little after 4.

I was having two different piercers do the cutting and burning, so as I entered the piercing room, they followed me in. After we got done talking about my impending move and work about to be done, they began to mark the spots on my arms, draw up sketches for reference, and see how my skin moves so that the scars would heal evenly, and not bulge out in spots. We also put some topical anesthetic on my right arm, because, hey, I had never been burned before, and I wasn"t sure how bad it was going to hurt.

I was getting the cutting done first, and after the lines were marked, we locked the door and got to work. I was getting six lines cut in all, and I was anxious to get to it. The first line was good, I have some masochistic tendencies, and I"ve always been a fan of how cuts feel. "The old familiar sting," to quote NIN, felt superb. We used four scalpels all together, I think and each cut felt better and better. I could feel my skin open up, and it was wonderful. There was a lot of blood, and we got some good pictures of me with my piercer. We did a pressing of the cuts, so I have the shape of them in a blood outline that I still have yet to frame. They now look really good, I just need to get the bottom cut gone over again a little deeper, because we went over it tentatively because it was the first cut. I am really pleased with how it turned out.

After that I went out and had a cigarette, I needed to relax a little. I wasn"t in pain, I was just too excited and my adrenaline and endorphins had me bouncing off the walls. I went back in and it was time to get my guiche done. I wasn"t at all worried about getting that done, I had it done before, so I knew what to expect. It wasn"t healing well the first time I had it done, so I took it out, and I had the jewelry sterilized so I could try it again, hopefully with better luck this time. The jewelry is a sweet 6-gauge 5/8" diameter pink titanium circular barbell. I took off my pants, lied on the table, spread my legs and had the piercing done. Something that has consistently surprised me has been how little genital piercings hurt, well, at least all of them other than my apadravya. To report on how my guiche is doing: sadly enough, it fell out last week. I went to take a piss, and lo and behold, the fucker was gone. I guess I"m just not supposed to have a guiche piercing. < p> After another cigarette and a can of Coke, I was back in the room. I felt stoked cause I was halfway done with my list of stuff for the day. The anesthetic had started to work, which was good, because it was time for the branding. I was doing six curved lines around this scar, and we had only one cautery pen, so I hoped things proceeded well. The piercer who had done my cutting warned me that the pen might not hold up for the entire length of what we needed. This branding would be done by the pierced who had just done my guiche. I lied back on the table, and it was time to begin. The anesthetic helped a bit, but there were some parts where I could definitely feel the searing of my skin. It was pretty intense, but once I focused my thoughts, the tingle felt almost good. The stench, however, was horrible. We had the windows open and some incense burning, but damn. The smell of burning flesh was permeating everywhere. And all of a sudden, mid-line, then pen burned out. The othe r piercer was like "told you so." So, the piercer told me to come back in about three months to get it finished. We left the room and then stunk up the whole studio. The place smelled like a crematorium. The smell of singed flesh and hair was thick in the air, and since it was a Friday night, it was busy in the shop, and many of the patrons had a disgusted look on their faces. It scabbed really well, much to the delight of my girlfriend. Apparently she"s a huge fan of scabs, and was begging me every day to let her pick them off. All the scabs are off now, and they look really good. Just another two months and I can get it finished.

After yet another cig break and some food and pop to keep my blood sugar up, it was time to get tattooed. I had about two hours ahead of me. I don"t remember exactly how much time it took, by that point I was fairly worn down. I sat for that, and it turned out really well. It"s a large Ganesh piece on my right thigh. I love that tattoo so much.

So after my long day, I was fuckin" beat. I had been cut, pierced, branded, and tattooed. I felt tired and weary. Another unfortunate thing was that since I was moving, I had a going away party to go to that night. I was so tired and weary. And then I didn"t even get to leave the party and get to bed until after 7am. Then I woke up at 3pm the next day and dropped acid with a friend of mine. So it was a great way to finish my stay in the city. And my body was, amazingly enough, able to withstand it all.

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2023-08-11 07:34:461

风油精英语怎么说?

问题一:风油精用英语怎么说 essential balm,药盒上都这么写。 问题二:"风油精" 用英文怎么讲 Essential Balm 风油精的英文说明书上这么写的 问题三:风油精的英文,风油精的翻译,怎么用英语翻译风油精 wind medicated oil 问题四:风油精 英文shiyong说明 风油精 (FengYouJing) Description (简介) Essential balm, menthol, camphor, eucalyptus oil, Liu acid methyl ester plus liquid paraffin, chlorophyll, essential oils, made with green liquid drugs. Wide range of applications, headache, rheumatic pain, toothache, motion sickness, seasickness, etc. have a certain effect. Under normal circumstances, topical administration, but if necessary can also be oral. Functions and Indications (功效及使用指示) Cool, *** gesic, carminative, anti-itch. For mosquito bites, colds, headache, dizziness, motion sickness disfort. Have a good effect for the removal of adhesive stickers on the furniture. Usage Dosage(使用剂量) This product is for external use, rub on the affected area, oral (4-6 drops each time); reduce dosage for children or consult physician or pharmacist. Caution (注意) 1. Pregnant women and children under the age of three, use with caution. 2. Not to be used on skin burns, chapped skin and ulcers. 3. Avoid contact with eyes. 4. Stop using if skin bees red, swollen, and itchy during or after use. 5. The cap of the bottle should be kept tight and the bottle should be stored in a cool place. 6. Stop using if the properties changed. 7. Use on children must be under *** supervision. 8. Keep out of reach of children. 9. If you are taking other drugs, please consult your physician or pharmacist before using. ~~~~~~~~~~~~~~纯人手翻译,欢迎采纳~~~~~~~~~~~~~~...>> 问题五:请问皮子或皮革护理液用英语怎么说 风油精menthol balm 皮革护理Leather car solution 问题六:英语风油精产品介绍 Thje mint oil is very useful for curing car sick, dizziness becuase of the heat and mosqitol bites. it"s a medicine that"s really usual for chinese families in the summer. however, you should be careful when using it. you can apply it only on your skin, don"t eat it or let it enter your eyes. also, you should put it in a place where chilren can"t reach it. 清凉油,用处:用于蚊虫叮咬,晕车,天气炎热引起头痛等。清凉油夏季中国家庭常用药品。注意事项:外用,请勿口服和误入眼内放在儿童不能触及的地方。 问题七:风油精用英语怎么说 essential balm,药盒上都这么写。 问题八:"风油精" 用英文怎么讲 Essential Balm 风油精的英文说明书上这么写的 问题九:风油精的英文,风油精的翻译,怎么用英语翻译风油精 wind medicated oil 问题十:风油精 英文shiyong说明 风油精 (FengYouJing) Description (简介) Essential balm, menthol, camphor, eucalyptus oil, Liu acid methyl ester plus liquid paraffin, chlorophyll, essential oils, made with green liquid drugs. Wide range of applications, headache, rheumatic pain, toothache, motion sickness, seasickness, etc. have a certain effect. Under normal circumstances, topical administration, but if necessary can also be oral. Functions and Indications (功效及使用指示) Cool, *** gesic, carminative, anti-itch. For mosquito bites, colds, headache, dizziness, motion sickness disfort. Have a good effect for the removal of adhesive stickers on the furniture. Usage Dosage(使用剂量) This product is for external use, rub on the affected area, oral (4-6 drops each time); reduce dosage for children or consult physician or pharmacist. Caution (注意) 1. Pregnant women and children under the age of three, use with caution. 2. Not to be used on skin burns, chapped skin and ulcers. 3. Avoid contact with eyes. 4. Stop using if skin bees red, swollen, and itchy during or after use. 5. The cap of the bottle should be kept tight and the bottle should be stored in a cool place. 6. Stop using if the properties changed. 7. Use on children must be under *** supervision. 8. Keep out of reach of children. 9. If you are taking other drugs, please consult your physician or pharmacist before using. ~~~~~~~~~~~~~~纯人手翻译,欢迎采纳~~~~~~~~~~~~~~...>>
2023-08-11 07:34:581

tips这个词的来源请问tips这个词是怎么来的

tips英 [tu026aps] 美 [tu026aps] abbr.Tax Intercept Programs 税务拦截计划;to insure prompt service (gratuities) 确保快捷服务(赏金);topical information packages 论题信息包n.顶端( tip的名词复数 );倾斜;末端;(鸟或飞机的)翼尖v.(使)某物侧边提高,倾斜,翻倒( tip的第三人称单数 );给小费;将(所盛之物)倒出;轻打。
2023-08-11 07:35:071

担任学习委员用英语怎么说?

charge with study commissary
2023-08-11 07:35:289

药品外盒上面有个外是什么意思代表什么类型的药

外用药
2023-08-11 07:35:488

analgesic balm是什么意思

analgesic balm是一种抗刺激药(含薄荷脑和水杨酸甲酯的香膏)[网络短语] analgesic balm 镇痛唇膏,止痛膏,镇痛膏
2023-08-11 07:36:311

Dermovαte Topicαl Creαm是什么意思?

Dermovate Topical Cream去皮乳膏
2023-08-11 07:36:532

Topical formulations

有关题目公式化的表述
2023-08-11 07:38:351

谈论的网络解释谈论的网络解释是什么

谈论的网络解释是:谈论谈论,拼音tánlùn,是指以谈话的方法表示对人对事的看法。谈论的网络解释是:谈论谈论,拼音tánlùn,是指以谈话的方法表示对人对事的看法。注音是:ㄊㄢ_ㄌㄨㄣ_。拼音是:tánlùn。词性是:动词。结构是:谈(左右结构)论(左右结构)。谈论的具体解释是什么呢,我们通过以下几个方面为您介绍:一、词语解释【点此查看计划详细内容】谈论tánlùn。(1)以谈话的方法表示对人对事的看法。二、引证解释⒈谈说议论。引《韩非子·说难》:“故__谈论之士,不可不察爱憎之主而后_焉。”唐杜甫《别李义》诗:“洗然遇知己,谈论淮湖奔。”巴金《寒夜》二五:“人们带笑地谈论战争的消息。”三、国语词典言谈议论。关于谈论的近义词辩论评论议论讨论关于谈论的反义词沉默关于谈论的诗词《刘农伯过访静公适至谈论甚快别后有诗见寄依韵答和》关于谈论的诗句谈论淮湖奔在一间面向院子的洁净房间里这院子处于黑夜的力量与圆满之下我们谈论无关的事物而是巨大而阴暗仿佛一座远山的暮色而猜想和记忆又接替那隐约的谈论如深不可测的一声回响关于谈论的单词discussiondiscusswithtopicalspeakabouttalemakewordsmakeanoise关于谈论的成语长谈阔论谈古论今谈论风生高谈大论高谈弘论迂谈阔论高谈虚论阔论高谈虚论浮谈谈今论古关于谈论的词语谈今论古迂谈阔论高谈弘论高谈阔论虚谈高论长谈阔论高谈剧论谈古论今阔论高谈谈论风生关于谈论的造句1、对于昨晚的电视连续剧,大家没有一点谈论的兴趣,只有老王在那里津津乐道。2、我们尽可谈论美的事物,然而美本身却是抽象的。3、他们正在谈论昨天的会议。4、开学第一天,同学们都兴奋地谈论着各自的假期见闻。5、虽然过了几十年,但那本谈论经济原理的书,依然是_所公认的一字千金之作,无可取代。点此查看更多关于谈论的详细信息
2023-08-11 07:38:431

All the police at the station are_____men A.topical B.local C.native D.neighbourly 选哪一个??

选B 一位 当地人 相当于 local people
2023-08-11 07:38:501

谈论的拼音狐谈论的拼音是什么

谈论的读音是:tánlùn。谈论的拼音是:tánlùn。词性是:动词。注音是:ㄊㄢ_ㄌㄨㄣ_。结构是:谈(左右结构)论(左右结构)。谈论的具体解释是什么呢,我们通过以下几个方面为您介绍:一、词语解释【点此查看计划详细内容】谈论tánlùn。(1)以谈话的方法表示对人对事的看法。二、引证解释⒈谈说议论。引《韩非子·说难》:“故__谈论之士,不可不察爱憎之主而后_焉。”唐杜甫《别李义》诗:“洗然遇知己,谈论淮湖奔。”巴金《寒夜》二五:“人们带笑地谈论战争的消息。”三、国语词典言谈议论。四、网络解释谈论谈论,拼音tánlùn,是指以谈话的方法表示对人对事的看法。关于谈论的近义词评论议论讨论辩论关于谈论的反义词沉默关于谈论的诗词《刘农伯过访静公适至谈论甚快别后有诗见寄依韵答和》关于谈论的诗句对人谈论气如虹醉中谈论心犹壮在一间面向院子的洁净房间里这院子处于黑夜的力量与圆满之下我们谈论无关的事物关于谈论的单词discussiondiscusswithmakeanoisespeakabouttopicaltalemakewords关于谈论的成语高谈弘论虚论浮谈阔论高谈谈古论今谈天论地奇谈怪论谈今论古迂谈阔论谈论风生高谈大论关于谈论的词语阔论高谈虚论浮谈谈论风生高谈大论高谈阔论长谈阔论高谈弘论谈古论今高谈虚论谈天论地关于谈论的造句1、对于昨晚的电视连续剧,大家没有一点谈论的兴趣,只有老王在那里津津乐道。2、这部大家期待已久的电影还没上映,大家就兴致勃勃地谈论起了它。3、这个无聊的话题不值得谈论。4、他们正在谈论昨天的会议。5、虽然过了几十年,但那本谈论经济原理的书,依然是_所公认的一字千金之作,无可取代。点此查看更多关于谈论的详细信息
2023-08-11 07:38:571

新买的兔子需要做体外驱虫吗?

可以做,买这个“长效球虫防疫针”,连球虫、寄生虫一起除
2023-08-11 07:39:081

topical cream 中文药名是什么?

```````````外用乳膏````````````
2023-08-11 07:39:251

LTR是什么意思

应该是Long Time Relationship.
2023-08-11 07:40:084

印度神油英文名称

tWJ艰
2023-08-11 07:40:256

请求详细解析一道英语阅读题

CABD 68、 If they knew that objects are solid and they reached out for the illusion and found empty air, they could be expected to show surprise in their faces and movements这句话中的they could be expected to show surprise in their faces and movements表示说。如果小孩show surprise 的话,就说明他们可以认知道原本在的东西不见了,这是对事物的一种认识。而不是A所说的视觉效果,因为他们都是可以看到的。B是实验堆baby的影响也不对,D是不同的实验来测试baby的感觉,也不对69 、We know that if we put a box in a room and lock the door, the box will still be there when we come back. But does a baby realize that a ball that rolls under a chair does not disappear and go to never-never land? 这短话是说把box藏在门背后,然后当box消失的时候看baby是否会惊讶,显然16周和22周的baby给出了不同的反应。所以答案显然是A。70、文章第三段以后很多次提到了screen,所以实验者显然用到了screen来作为道具,所以选B71、可以用排除法来做:A,实验中给孩子们看到东西在哪里,并且孩子可以找到。所以错B,train 和ball 是实验者的道具,并不是baby的选择。所以错C,这是实验者的实验,不是baby自主想要做的事情。所以错答案只有D是正确的,孩子无法辨别真实的东西跟视觉虚拟的东西。
2023-08-11 07:40:422

对open access熟知的同胞能否告知有哪些好处啊,看到美国科研出版社是OA期刊,想投稿。。

上面同学 提到的美国科研出版社的《临床医学》IJCM这篇文章,因为是OPEN ACCESS的,也就是所有的文章都可以免费阅读和下载。我也在该期刊出版社网站下载看过,这文章点击下载量之所以多,是因为文章写的确实很好,同时也说明作为平台的该期刊质量水平较高层次,通过这本期刊网站的Indexing看到其已经被CrossRef、Google Scholar、CAS、CSP、Gale、SHERPA/RoMEO、ProQuest、DOAJ等数据库收录,影响因子当然不小咯。
2023-08-11 07:41:051

【译文】怎样在R语言中使用SQL命令

(downloader) library(dplyr)library(sqldf)library(data.table)library(ggplot2)library(compare)library(plotrix)主要的错误处理函数tryCatch()我们将使用这个函数来处理下载的数据。由于数据以季度频率发布,每年都会有四个观_值(每年有四条记录)。执行这个函数能自己主动下载数据,但假设某些季度数据从网上无法获取(尚未发布)。该函数会返回一条错误信息表示无法找到数据集。如今让我们下载数据的压缩包并将其解压。try.error = function(url){ try_error = tryCatch(download(url,dest="data.zip"), error=function(e) e) if (!inherits(try_error, "error")){ download(url,dest="data.zip") unzip ("data.zip") } else if (inherits(try_error, "error")){ cat(url,"not found ") } }下载不良事件数据我们能够得到自2004年起的FDA不良事件数据。本文将使用2013年以来发布的数据,我们将检查截至当前时间的最新数据并下载。> Sys.time() 函数会返回当前的日期和时间。> data.table包中的year()函数会从之前返回的当前时间中提取年份信息。我们将下载人口、药物、诊断/指示,结果和反应(不良事件)数据。year_start=2013year_last=year(Sys.time())for (i in year_start:year_last){ j=c(1:4) for (m in j){ url1<-paste0("http://www.nber.org/fda/faers/",i,"/demo",i,"q",m,".csv.zip") url2<-paste0("http://www.nber.org/fda/faers/",i,"/drug",i,"q",m,".csv.zip") url3<-paste0("http://www.nber.org/fda/faers/",i,"/reac",i,"q",m,".csv.zip") url4<-paste0("http://www.nber.org/fda/faers/",i,"/outc",i,"q",m,".csv.zip") url5<-paste0("http://www.nber.org/fda/faers/",i,"/indi",i,"q",m,".csv.zip") try.error(url1) try.error(url2) try.error(url3) try.error(url4) try.error(url5) } }http://www.nber.org/fda/faers/2015/demo2015q4.csv.zip not found...http://www.nber.org/fda/faers/2016/indi2016q4.csv.zip not found依据上面的错误信息。截至成文时间(2016年3月13日)。我们最多能够获得2015年第三季度的不良事件数据。> list.files()函数会字符串向量的形式返回当前工作文件夹下全部文件的名字。> 我会使用正_表_式对各个数据集的类别进行筛选。比方^demo.*.csv表示全部名字以demo开头的csv文件。filenames <- list.files(pattern="^demo.*.csv", full.names=TRUE)cat(‘We have downloaded the following quarterly demography datasets‘)filenames我们已经下载了下列季度人口数据"./demo2012q1.csv" "./demo2012q2.csv" "./demo2012q3.csv" "./demo2012q4.csv" "./demo2013q1.csv" "./demo2013q2.csv" "./demo2013q3.csv" "./demo2013q4.csv" "./demo2014q1.csv" "./demo2014q2.csv" "./demo2014q3.csv" "./demo2014q4.csv" "./demo2015q1.csv" "./demo2015q2.csv" "./demo2015q3.csv"让我们用data.table包中的fread()函数来读入这些数据集,以人口数据为例:demo=lapply(filenames,fread)接着让我们把它们转换数据结构并合并成一个数据框:demo_all=do.call(rbind,lapply(1:length(demo),function(i) select(as.data.frame(demo[i]),primaryid,caseid, age,age_cod,event_dt,sex,reporter_country)))dim(demo_all) 3554979 7 我们看到人口数据有超过350万行观_(记录)。译者注:以下的内容都是反复这个流程。能够略过如今让我们合并全部的药品数据filenames <- list.files(pattern="^drug.*.csv", full.names=TRUE)cat(‘We have downloaded the following quarterly drug datasets: ‘)filenamesdrug=lapply(filenames,fread)cat(‘ ‘)cat(‘Variable names: ‘)names(drug[[1]])drug_all=do.call(rbind,lapply(1:length(drug), function(i) select(as.data.frame(drug[i]),primaryid,caseid, drug_seq,drugname,route)))我们已经下载了下列季度药品数据集"./drug2012q1.csv" "./drug2012q2.csv" "./drug2012q3.csv" "./drug2012q4.csv" "./drug2013q1.csv" "./drug2013q2.csv" "./drug2013q3.csv" "./drug2013q4.csv" "./drug2014q1.csv" "./drug2014q2.csv" "./drug2014q3.csv" "./drug2014q4.csv" "./drug2015q1.csv" "./drug2015q2.csv" "./drug2015q3.csv"每张表中的变量名分别为:"primaryid" "drug_seq" "role_cod" "drugname" "val_vbm" "route" "dose_vbm" "dechal" "rechal" "lot_num" "exp_dt" "exp_dt_num" "nda_num" 合并全部的诊断/指示数据集filenames <- list.files(pattern="^indi.*.csv", full.names=TRUE)cat(‘We have downloaded the following quarterly diagnoses/indications datasets: ‘)filenamesindi=lapply(filenames,fread)cat(‘ ‘)cat(‘Variable names: ‘)names(indi[[15]])indi_all=do.call(rbind,lapply(1:length(indi), function(i) select(as.data.frame(indi[i]),primaryid,caseid, indi_drug_seq,indi_pt)))已经下载的数据集为:"./indi2012q1.csv" "./indi2012q2.csv" "./indi2012q3.csv" "./indi2012q4.csv" "./indi2013q1.csv" "./indi2013q2.csv" "./indi2013q3.csv" "./indi2013q4.csv" "./indi2014q1.csv" "./indi2014q2.csv" "./indi2014q3.csv" "./indi2014q4.csv" "./indi2015q1.csv" "./indi2015q2.csv" "./indi2015q3.csv"变量名为:"primaryid" "caseid" "indi_drug_seq" "indi_pt" 合并病人的结果数据:filenames <- list.files(pattern="^outc.*.csv", full.names=TRUE)cat(‘We have downloaded the following quarterly patient outcome datasets: ‘)filenamesoutc_all=lapply(filenames,fread)cat(‘ ‘)cat(‘Variable names ‘)names(outc_all[[1]])names(outc_all[[4]])colnames(outc_all[[4]])=c("primaryid", "caseid", "outc_cod")outc_all=do.call(rbind,lapply(1:length(outc_all), function(i) select(as.data.frame(outc_all[i]),primaryid,outc_cod)))下载的数据集例如以下:"./outc2012q1.csv" "./outc2012q2.csv" "./outc2012q3.csv" "./outc2012q4.csv" "./outc2013q1.csv" "./outc2013q2.csv" "./outc2013q3.csv" "./outc2013q4.csv" "./outc2014q1.csv" "./outc2014q2.csv" "./outc2014q3.csv" "./outc2014q4.csv" "./outc2015q1.csv" "./outc2015q2.csv" "./outc2015q3.csv" 变量名:"primaryid" "outc_cod" "primaryid" "caseid" "outc_code" 最后来合并反应(不良事件)数据集(译者注:这部分无聊地我要哭了)filenames <- list.files(pattern="^reac.*.csv", full.names=TRUE)cat(‘We have downloaded the following quarterly reaction (adverse event) datasets: ‘)filenamesreac=lapply(filenames,fread)cat(‘ ‘)cat(‘Variable names: ‘)names(reac[[3]])reac_all=do.call(rbind,lapply(1:length(indi), function(i) select(as.data.frame(reac[i]),primaryid,pt)))下载的数据集有:"./reac2012q1.csv" "./reac2012q2.csv" "./reac2012q3.csv" "./reac2012q4.csv" "./reac2013q1.csv" "./reac2013q2.csv" "./reac2013q3.csv" "./reac2013q4.csv" "./reac2014q1.csv" "./reac2014q2.csv" "./reac2014q3.csv" "./reac2014q4.csv" "./reac2015q1.csv" "./reac2015q2.csv" "./reac2015q3.csv"变量名为:"primaryid" "pt" 让我们看看不同的数据类型各有多少行all=as.data.frame(list(Demography=nrow(demo_all),Drug=nrow(drug_all), Indications=nrow(indi_all),Outcomes=nrow(outc_all), Reactions=nrow(reac_all)))row.names(all)=‘Number of rows‘allSQL命令记住sqldf包使用SQLiteCOUNT# SQL版本号sqldf("SELECT COUNT(primaryid)as ‘Number of rows of Demography data‘FROM demo_all;")# R版本号nrow(demo_all)3554979 LIMIT命令(显示前几行)# SQL版本号sqldf("SELECT *FROM demo_all LIMIT 6;")# R版本号head(demo_all,6)R1=head(demo_all,6)SQL1 =sqldf("SELECT *FROM demo_all LIMIT 6;")all.equal(R1,SQL1)TRUE*译者注:这部分代码验证了SQL命令和R代码的等价性,下同。WHERE命令SQL2=sqldf("SELECT * FROM demo_all WHERE sex =‘F‘;")R2 = filter(demo_all, sex=="F")identical(SQL2, R2)TRUESQL3=sqldf("SELECT * FROM demo_all WHERE age BETWEEN 20 AND 25;")R3 = filter(demo_all, age >= 20 & age <= 25)identical(SQL3, R3)TRUEGROUP BY 和 ORDER BY# SQL版本号sqldf("SELECT sex, COUNT(primaryid) as TotalFROM demo_allWHERE sex IN (‘F‘,‘M‘,‘NS‘,‘UNK‘)GROUP BY sexORDER BY Total DESC ;")# R版本号demo_all %>% filter(sex %in%c(‘F‘,‘M‘,‘NS‘,‘UNK‘)) %>% group_by(sex) %>%summarise(Total = n()) %>% arrange(desc(Total))SQL3 = sqldf("SELECT sex, COUNT(primaryid) as TotalFROM demo_allGROUP BY sexORDER BY Total DESC ;")R3 = demo_all%>%group_by(sex) %>% summarise(Total = n())%>%arrange(desc(Total))compare(SQL3,R3, allowAll=TRUE)TRUE dropped attributes利用SQL命令进行数据清洗并绘制3D饼图SQL=sqldf("SELECT sex, COUNT(primaryid) as TotalFROM demo_allWHERE sex IN (‘F‘,‘M‘,‘NS‘,‘UNK‘)GROUP BY sexORDER BY Total DESC ;")SQL$Total=as.numeric(SQL$Totalpie3D(SQL$Total, labels = SQL$sex,explode=0.1,col=rainbow(4), main="Pie Chart of adverse event reports by gender",cex.lab=0.5, cex.axis=0.5, cex.main=1,labelcex=1)输出的图例如以下:Inner Join让我们把药品数据和指数数据基于主id和药品序列内连。首先。我们要检查下变量名,看看怎样合并两个数据集。names(indi_all)names(drug_all) "primaryid" "indi_drug_seq" "indi_pt" "primaryid" "drug_seq" "drugname" "route" names(indi_all)=c("primaryid", "drug_seq", "indi_pt" ) # 使两个数据集变量名一致R4= merge(drug_all,indi_all, by = intersect(names(drug_all), names(indi_all))) # R版本号合并R4=arrange(R3, primaryid,drug_seq,drugname,indi_pt) # R版本号排序SQL4= sqldf("SELECT d.primaryid as primaryid, d.drug_seq as drug_seq, d.drugname as drugname, d.route as route,i.indi_pt as indi_pt FROM drug_all d INNER JOIN indi_all i ON d.primaryid= i.primaryid AND d.drug_seq=i.drug_seq ORDER BY primaryid,drug_seq,drugname, i.indi_pt") # SQL版本号compare(R4,SQL4,allowAll=TRUE)TRUE # 两种方法等价R5 = merge(reac_all,outc_all,by=intersect(names(reac_all), names(outc_all)))SQL5 =reac_outc_new4=sqldf("SELECT r.*, o.outc_cod as outc_cod FROM reac_all r INNER JOIN outc_all o ON r.primaryid=o.primaryid ORDER BY r.primaryid,r.pt,o.outc_cod")compare(R5,SQL5,allowAll = TRUE)TRUE# 绘制不同性别的年龄概率分布密度图ggplot(sqldf(‘SELECT age, sex FROM demo_all WHERE age between 0 AND 100 AND sex IN ("F","M") LIMIT 10000;‘), aes(x=age, fill = sex))+ geom_density(alpha = 0.6)绘制出的图例如以下:绘制不同结果的年龄年龄概率分布密度图(译者注:后面都是结果的可视化,可略过。原作者的耐心真好。。)ggplot(sqldf("SELECT d.age as age, o.outc_cod as outcome FROM demo_all d INNER JOIN outc_all o ON d.primaryid=o.primaryid WHERE d.age BETWEEN 20 AND 100 LIMIT 20000;"),aes(x=age, fill = outcome))+ geom_density(alpha = 0.6)输出例如以下:ggplot(sqldf("SELECT de.sex as sex, dr.route as route FROM demo_all de INNER JOIN drug_all dr ON de.primaryid=dr.primaryid WHERE de.sex IN (‘M‘,‘F‘) AND dr.route IN (‘ORAL‘,‘INTRAVENOUS‘,‘TOPICAL‘) LIMIT 200000;"),aes(x=route, fill = sex))+ geom_bar(a
2023-08-11 07:41:301

男士外用持久延时喷剂用英语怎么说

男性朋友应多了解一些早泄方面的知识,这样才能有效的防止早泄的发生。患上早泄后,患者不要过于担心,只要找到病因针对性治疗后就可治愈。
2023-08-11 07:41:4211

special issue,topic,collection

special issue的意思是:专辑;特刊;专刊 issue 读法 英 [u02c8u026au0283uu02d0] 美 [u02c8u026au0283uu02d0] 1、n.重要议题;争论的问题;(有关某事的)问题,担忧;一期;期号 2、v.宣布;公布;发出;(正式)发给,供给;(尤指通过正式文件)将…诉诸法律 短语: 1、political issue 政治问题 2、rights issue 增股;权利股发行 3、current issue 现刊;现期杂志;近期杂志 4、bond issue 债券发行
2023-08-11 07:43:351

什么是有机食物

摘要:有机食物是以生命养生命的一种绿色循环,那么,有机食物与无机食物的区别是什么呢?有机食物完全不含有没有生命存在的化学成份。它是以微生物培植或自然转换成的天然的养份来孕育各种人们可食用的植物。对人类健康不存在任何的威胁。下面小编就详细为您讲解什么是有机食物,有机食物与无机食物的区别。【有机食品】什么是有机食物有机食物与无机食物的区别什么是有机食物有机食物是零污染的食物,即是不经过化肥、农药、除草剂等污染的食物,而且肥料必须用自然堆肥,凡是任何加害土壤的添加物,都不可使用。一、有机食物简介有机食物简单的讲,就是以生命养生命的一种绿色循环。它完全不含有没有生命存在的化学成份。它是以微生物培植或自然转换成的天然的养份来孕育各种人们可食用的植物。对人类健康不存在任何的威胁。这包括;蔬菜、水果、禽蛋、各种肉类等等,不胜枚举。总之,它是天然的、无害的、对人身体有益的健康食品。有机食物是极低污染的食物,即是不经过化肥、农药、除草剂等污染的食物,而且肥料必须用自然堆肥,凡是任何加害土壤的添加物,都不可使用。目前经认证的有机食物主要包括一般的有机农作物产品(例如粮食(包括有机大米、有机小米、有机五彩豆、有机荞麦、有机绿豆、有机黄豆、有机红小豆、有机黑豆、有机玉米糁等)、水果(包括有机草莓、有机苹果等)、蔬菜(包括有机生菜、有机西红柿、有机黄瓜等)等)、有机茶产品、有机食用菌产品、有机畜禽产品、有机水产品、有机蜂产品、采集的野生产品以及用上述产品为原料的加工产品。国内市场销售的有机食品主要是蔬菜、大米、茶叶、蜂蜜等。二、有机食物标准食品1.农作种植的水源、土壤与原料、肥料必须符合有机农业标准。2.生产、收成及加工过程不得使用杀虫剂、合成(化学)肥料、农药、化学添加物。3.土壤必须休耕三年。4.食材不得经过任何基因工程改造。5.必须通过政府机构的管制与认证。有机食物农场1.使用天然肥料(堆肥)来喂养土壤,增加土壤养分。2.耕种前经过三年的休耕,让土壤里残馀的有毒物质自然消失。3.耕种过程不使用农药、杀虫剂、合成(化学)肥料。4.尊重天然的生态系统及循环。有机食物饲养1.饲料必须符合有机规范的天然饲料。2.一定要在适合其生存的自然户外环境放养。3.禁止使用抗生素、荷尔蒙或生长激素。4.人道对待饲养的动物。三、有机食物特点1、使用有机肥料:有机食物的种植过程中,只会使用有机肥料,如:花生麸、角衣片和动物的骨粉等,这些天然材料对泥土构成的污染和负荷会减到最低,环保得很。2、使用有机农药:除了种植方法是有机外,防虫的过程也会用有机农药,非常天然,以达到生态平衡、维持生物多样性,令食物不会含有有毒或长期残留的化学添加剂、色素和化学防腐剂等,无论对健康和对环境都有莫大的好处。3、取得有机认证:不同国家都为“有机耕种”定义,在美国,所有使用organic这字的产品,都受美国农业部国家有机标准计划(usdanationalorganicprogram,nop)规管。而世界各地也有不同的官方或私营认证机构。它们会按本身所制定的标准提供认证服务,英国土壤协会(soilassociation)和欧洲的ecocert就是当中的例子,而在众多的认证中,取得ocia和美国usda认证较有保证。四、有机食物争议英国一个研究小组在考查了50年来发表的有关有机食品的文献后得出结论:有机食物并不比用传统方式生产的食品营养价值更高。不过,这项研究没有涉及到与不同农业生产方法相关的污染物或化学残留物。有机食品的一个主要卖点就是无化学添加剂。总部位于新泽西州的行业协会食品研究所(FoodInstitute)所长托德(BrianTodd)回应这项研究时说,有机食品中没有非有机化学物质和杀虫剂,这才是有机食品的诱人之处。这项研究是由伦敦卫生及热带医学学院(LondonSchoolofHygiene&TopicalMedicine)的研究人员进行的,报告发表在周三出版的《美国临床营养学杂志》(AmericanJournalofClinicalNutrition)上。研究报告的作者之一、该学院公共卫生干预研究部门的丹格尔(AlanDangour)说,研究发现有机食品和传统方法生产的食品在营养成分上存在一些差异,不过这对公共健康不太可能有任何影响。由于有机食品据说有健康和营养方面的益处,一些消费者愿意花更多的钱买有机食品。研究人员们说,2007年全球有机食品市场估计规模有290亿欧元(合411亿美元)。其他研究也曾得出结论说有机食品并没有更高的营养,不过研究报告的作者们说,他们的努力是对有关这一课题的已发表报告的第一个系统性评估。在研究中,研究人员搜集了5万多份报告,得出162篇关于有机食品和传统方式生产的农畜产品在营养价值上的对比文章。其中有55篇满足了有机认证和生产食品的种类标准。五、有机食物判断标准1、原料来自于有机农业生产体系或野生天然产品。2、有机食品在生产和加工过程中必须严格遵循有机食品生产、采集、加工、包装、贮藏、运输标准,禁止使用化学合成的农药、化肥、激素、抗生素、食品添加剂等,禁止使用基因工程技术及该技术的产物及其衍生物。3、有机食品生产和加工过程中必须建立严格的质量管理体系、生产过程控制体系和追踪体系,因此一般需要有转换期;这个转换过程一般需要2-3年时间,才能够被批准为有机食品。4、有机食品必须通过合法的有机食品认证机构的认证。六、有机食物与无机食物的区别有机食品是一种原生态的食品,在种植过程中不使用化肥等,从土壤到货品上架都必须严格按照有机食品认证要求。有机产品:被定义为一种利于增进生物多样性、生物循环系统和土壤生物活性的生态生产管理系统,旨在维护、增强生态和谐性。美国相关法规规定有机食品的生长不能使用合成农药、生长激素、抗生素、转基因技术、化肥或下水道污泥。为保证土壤肥力多采用作物轮种、交替耕作与栽培、种植覆盖作物、使用天然肥料等方法。种植有机作物的土地在作物收获前的3年内不能使用任何被禁止的物质,动物需要通过喂食80%的有机饲料9个月,100%有机饲料3个月之后才能称为有机。无机食品:现在没有无机食品这一说法,目前中国市场上只有普通食品没有经过任何认证的,还有一种是无公害食品,还有绿色食品,再就是有机食品,这4种认证的要求是越来越严格,对化肥和食品的添加剂的使用规定也越来越严格,严格意义上讲有机食品是不能含有食品添加剂的。
2023-08-11 07:43:481

有没有预防或者治疗龋齿的办法

龋齿【概述】龋齿(dental caries)是牙齿硬组织逐渐被破坏的一种疾病。发病开始在牙冠,如不及时治疗,病变继续发展,形成龋洞,终至牙冠完全破坏消失。未经治疗的龋洞是不会自行愈合的,其发展的最终结果是牙齿丧失。龋齿是细菌性疾病,因此它可以继发牙髓炎和根尖周炎,甚至能引起牙槽骨和颌骨炎症。龋齿的继发感染可以形成病灶(focal infection),致成或加得关节炎、心骨膜炎、慢性肾为和多种眼病等全身其他疾病。【治疗措施】治疗龋齿的主要方法是充填。即将龋坏组织去除净,作成一定的洞形,清洗、消毒以后,用充填材料(filling materrial)填初,并恢复牙齿缺损的外形,龄坏即可不继续发展。浅龋充填效果最好。中龋和深龋的治疗,在去净龋坏组织以后,有时洞底已接近牙髓,就需要在洞底加一层护髓剂再填初。有时深龋在去净龋坏组织以后牙髓就暴露了,就需要先采取牙髓治疗,然后才能填初。充填材料主要用银汞合金(amalgam)或复合充填树脂(composite resin)。乳牙因要换牙,可以用玻璃离子水门汀(glass sonomer cement)填补(暂时性充填材料)。没有形成龋洞的衩期龋,可以用药物治疗的方法,能达到一定的疗效。恒虐待常用氟化钠糊剂涂擦龋损;乳牙可用氟化双胺银(涂擦后有变色,故不用于恒牙)。涂药治疗后,仍可能复发,需要每半年复查一次。因此,治疗龋齿,愈早愈好。【病因学】龋齿是多因素疾病,主要包括三个方面:细菌、饮食、牙和唾液,三者相互关联,缺少一个方面都不能发生龋齿。当前学者们认为唾液作为牙齿的外环境,是重要影响龋病的因素。1.细菌 龋齿发生和发展过程中,由于细菌在龋病发病中起着主导作用,因此,近年来国际上公认龋病是细菌病致龋的细菌种类很多,最主要的是某些变形链球菌和乳酸杆菌。这些细菌与唾液中的粘蛋白和食物残屑混合在一起,牢固地粘附在牙齿表面和窝沟中。这种粘合物叫作牙菌斑或菌斑(dental plaque)。菌斑中的大量细菌产酸,造成菌斑下面的釉质表面脱钙、溶解。临床调查证明口腔中菌斑多的儿童龋齿也多。2.饮食 在龋齿形成过程中,饮食是细菌的重要作用物。食物中含有大量的碳水化合物和糖,这些物质既供给菌斑中细菌生活和活动能量,又通过细菌代谢作用使糖酵解产生有机酸,酸长期滞留在牙齿表面和窝沟中,使釉质脱矿破坏,继之某些细菌又使蛋白质溶解形成龋洞。致龋的糖类很多,最主要的是蔗糖。牙齿发育时期,营养决定牙齿组织的生化结构,钙化良好的牙齿抗龋性高。如果食物中含有的矿物盐类、主要维生素和微量元素,如钙、磷、维生素B1、D和氟等不足,牙齿的抗龋性就低,造成龋齿发病的条件。乳牙在胎儿期即已发生、发育和钙化,母新乳期的营养,对胎儿乳牙的发育虽然没有决定性影响,但加强母体营养仍对乳牙钙化有利的。除非母体患严重代谢障碍病或遗传病,一般乳牙不易受到严重影响。3.牙齿 牙齿的形态、结构和位置与龋齿发病有明显的关系。牙齿咬面的窝沟是发育过程中留下的缺陷,深窝沟内容易滞留细胞和食物残屑,而且不易清除掉,容易诱发龋齿。矿化不足,特别是钙化不足的牙齿,釉质和牙本质的致密度不高,抗龋性低,容易患龋齿。氟在牙齿矿化结构中的含量虽然很微少,但对增强牙齿的抗龋性很重要。牙齿中含适量氟就不易发生龋齿。乳牙和年轻恒牙的结构和钙化程度都还不够成熟,因此容易受致龋因素的影响,患龋率高。唾液是牙齿的外环境,起着缓冲、洗涤、抗蓖或抑菌等作用。量多而稀的唾液可以洗涤牙齿表面,减少细菌和食物残屑堆积。量少而稠的唾液易于滞留,助长菌斑形成和粘附在牙齿表面上。唾液的性质和成分影响其缓冲能力,也影响细菌的生活条件。【流行病学】龋齿是小儿常见的多发病,乳牙患龋率高峰约在5岁左右,恒牙患龋率约在15岁左右。根据上海市1981年调查材料,在15059名幼儿圆儿童和中小学学生中乳牙患龋人数为8523人,乳牙患龋率为56.62%。4岁时患龋率达65.92%,9岁为83.57%。据1983年北京地区对中小学生的调查,城郊区7岁儿童恒牙患龋率平均为48.88%,12岁为67.29%,17岁为73.61%。一般农村较城市人口恒牙患龋为低。资料表明城市人口恒牙患龋率平均为63.65%,平均龋牙数为1.67颗;农业人口患龋率为55.67%,平均龋牙数1.27颗。我国幅员辽阔,各地条件有别,患龋情况也有差别。因此,防龋工作应从牙齿一萌出就开始。【临床表现】龋齿最容易发生在磨牙和双尖牙的咬面小窝、裂沟中,以及相邻牙齿的接触面。前者称为窝沟龋,后者称为邻面龋。儿童发生在牙颈部的龋齿极少,只在严重营养不良或某些全身性疾病使体质极度虚弱时才可见到。根据龋齿破坏的程度,临床可分为浅龋、中龋和深龋(图1)。图1 龋虫及其并发病1.浅龋 龋蚀破坏只在釉质内,初期表现为釉质出现褐色或黑褐色斑点或斑块,表面粗糙。继而形成表面破坏。邻面龋开始发生在接触面下方,窝沟龋则多开始在沟内,早期都不容易看到。只有发生在窝沟口时才可以看到,但儿童牙齿窝沟口处又容易有食物的色素沉着,医师检查不仔细也会误诊或漏诊。浅龋没有自觉症状。2.中龋 龋蚀已达到牙本质,形成牙本质浅层龋洞。病儿对冷水、冷气或甜、酸食物会感到牙齿酸痛,但刺激去掉以后,症状立即消失。这是在为牙本质对刺激感觉过敏的缘故。中龋及时得到治疗效果良好。3.深龋 龋蚀已达到牙本质深层,接近牙髓,或已影响牙髓。患儿对冷、热、酸、甜都有痛感,特别对热敏感,一败涂地去掉以后,疼痛仍持续一定时间才逐渐消失。这时多数需要作牙髓治疗以保存牙齿。深龋未经治疗,则牙髓继发感染或牙髓坏死。细菌可以通过牙根达到根尖孔外,引起根尖周围炎症。可能形成病灶感染。牙冠若已大部破坏或只留残根时,应将其拔除。【预防】预防龋齿是一件非常重要的儿童保健工作,其基本原则是针对发病因素,采用相应措施。1.减少或消除病原刺激物 减少或消除菌斑,改变口腔环境,创造清洁条件是防龋的重要环节,最实际有效的办法是刷牙和漱口。应该加强宣传教育,使儿童从小养成口腔卫生习惯,学会合理刷牙方法。刷牙可以清除口腔中的大部细菌,减少菌斑形成。小儿可由家长用柔软毛巾或绒布擦洗牙齿。幼儿3岁以后就可以开始学习刷牙。尽可能做到早晚各刷一次,饭后漱口。唾前刷牙更重要,因为夜间间隔时间长,细菌容易大量繁殖。要顺刷,即“上虐待由上往下刷,下牙由下往上刷”,“里里外外都刷到”,还要注意刷后牙的咬面。这样就可把牙缝和各个牙面上的食物残渣刷洗干净,刷牙后要漱口。不要横刷,横刷容易损伤牙龈,也刷不净牙缝里的残渣。1975年卫生部、轻工业部和商业部曾共同召开全国牙刷会议,制订了“保健牙刷暂行规格”。1989年卫生部又召开了全国卫生标准技术委员会,由牙刷分会委员会对“暂行规格”。幼儿的牙刷标准毛束不超过两排,每排5~6束,毛质要软,小学生使用的牙刷毛不不超过三排,每排6~7束。又制定了中学生牙刷标准,以备成人牙刷作为参考。应该注意儿童的饮食习惯,按时增加各种辅食,多吃粗糙、硬质和含纤维质的食物,对牙面有磨擦洁净的作用,减少食物残屑堆积。硬质食物需要充分咀嚼,既增强牙周组织,又能磨擦牙齿咬面,可能使窝沟变浅,有利减少窝沟龋。2.减少或控制饮食中的糖 我国是以谷类为主食的国家,控制饮食中的碳水化物防龋是有困难的。但近年来,糖制食品和各种饮料显著增多。应注意宣传使家长教育儿童养成少吃零食和糖果糕点的习惯,睡前不吃糖,注意儿童三餐的质得。从幼儿就养成多吃蔬菜、水果和含钙、磷、维生素等多的食物。要尽可能吃些粗粮。要重视母乳喂养婴儿。近来国际上提倡控制饮食中的碳水化物、使用代糖(sugar substitute)来降低龋齿,这在我国当前是不实际的,也是不经济的。最近据报导美国常用的某种代糖(aspartame)含有毒性,已经引起国际上的注意。3.增强牙齿的抗龋性 主要是通过氟化法(fluoridation)增加牙齿中的氟素,特别是改变釉质表面或表面的结构,增强其抗龋性。近代被认为效果较好的方法有:自来水氟化(central water fluoridation)、学校饮水氟化(school water fluoridation)、牙面涂氟(topical fluoridization)、含氟牙膏刷牙(fluoridetoothbrushing)、氟溶液漱口(fluorde mouthrinse)等方法。自来水氟化防龋是由供水中心自动加氟化钠,使水的含氟量调节到防龋的适宜浓度。这是当前效果最好的方法。对自来水氟化法在国际和国内都有相反的两种见解,因此,只有少数国家和地区采用。我国广州曾试行实验区自来水氟化观察多年,由于加氟量计算不当(采用了世界卫生组织推荐的参考量),导致广州地区儿童发生氟斑牙,引起了家长的不满,现已停止全面加氟。我国地处三个地带,高氟地区很多,各地区水源、气候、农作物等含氟量均有差别,饮食种类和习惯也不尽同,因此,儿童每日摄氟量均需周密计算准确,因此,在我国强调自来水加氟防龋是不现实的。总之,氟防龋方法在高氟区均不能使用,有氟斑牙的儿童也不应使用。钦水氟化法是在托儿所、幼儿园、小学和中学的公共饮水中加入氟化钠,提高水的含氟量的防龋适宜浓度,由于这些儿童在园或在校时间的饮水量小,但加氟量要计算准确。上述两种方法对发育期尚未萌出牙和已萌出的牙都有作用。氟溶液漱口法适用于幼儿园和中、小学校。在有医务人员或老师监督下,推荐使用0.2%中性氟化钠水溶液漱口,每周或每2周1次,含漱1分钟,不得吞咽。是较为可行的方法。含氟牙膏刷牙法,一般浓度不超过0.4%氟化钠,儿童每天早、晚各刷牙1次,有一定降低龋齿的效果,较易推广,也是目前国际上公认的最佳辅助方法。任何氟化防龋方法,都只能用于水源无氟或低氟区。高氟区不能使用。总之,龋齿发病因素是复杂的,当前还没有一种能够预防新龋发生的最有效的单一方法。因此,预防龋齿要防治结合,既控制新龋发生,又要早发现、早治疗。有领导、有组织地开展口腔保健工作,定期在托儿所、幼儿园、小学和初中进行积极预防和早期治疗。同时加强妇幼保健和营养卫生工作,保证身体和牙齿的健康,可以降低龋齿的发病率。
2023-08-11 07:44:231

英语歌Days like masquerade的中文歌词

《Masquerade》为当红女饶舌歌手麻辣鸡Nicki Minaj第二张嘻哈流行专辑《Pink Friday: Roman Reloaded》豪华版中的曲目。该曲也作为了2012 adidas<全倾全力>广告背景曲,Nicki Minaj本人也参与了广告的拍摄。歌名:Masquerade演唱:Nicki Minaj词曲:Onika Maraj,Lukasz Gottwald,Benjamin Levin,Henry Walter歌曲时长:3:48所属专辑:《Pink Friday: Roman Reloaded》(Deluxe Edition)发行时间:2012-04-02唱片公司:Cash Money Records音乐风格:Synthpop, dance-pop中英歌词:Feel the beat at the drum随著鼓声的节奏Move like you really wanna be number one你像是要成为头号巨星一样的摇摆You could beat out the comp你可以不随著谱的规则来演奏Run like you really wanna be at the top你就像要成为最颠峰的角色而演出Stop" adrenaline by cause停止,肾上腺素激增是因为You have been identified as a hustler你已经被认定是一个骗子了Topical discussion repeat it like a percussion谣言八卦不停地重复就像停不下来的节奏Chuck the douce up" and tell "em is just love潇洒的道别,并告诉他们:这就是爱阿Damn digged a dug该死的,我真的超爱这样Like "em run state mag cause we living it up就像不断散波的杂志媒体,因为我们正活在当下Shelve tops is on现在杂志已经上架了And I pop it" like i"m popping我上了封面,我懒得再去诠释Like a popping sin call每次都是多说多错And now" I don"t wanna take you而现在,我不想再抓住你If we fall dow如果我们坠落了Don"t get upset" and now it"s just the beginning不要难过,因为这只是个开始而已And we"ll figure it somehow而我们该去想办法盤算一下Right now masquerade" master the mary go round现在开始伪装吧,把一切耍得团团转Right now masquerade" master the mary go round现在开始伪装吧,把一切耍得团团转Right" now" it"s something you created就是现在,你去搞点东西出来It"s never ever too late这永远都不会太晚It"s never ever too late这永远都不会太晚Right now现在Okay to make a mistake好吧,去弄些大问题出来Yeah baby this is your day耶~宝贝,这是属於你的日子It"s time to masquerade是时候开始伪装了Bass bass低音声Feel the bass in ya face感觉重低音袭上你的脸庞Hit the finish line抵达终点线First place in the race在这场比赛得到胜利Yes" king kong on ya chestyes~挺著金刚般的胸膛Running and i"m coming up拍打著迎接我的到来Baton to your left把棒子交接给你Yup" you could be who you want耶~你现在可以变成你想成为的那个样You could be who you is你可以变成你想要的样子Never be who you aren"t不要变成你不想的样子Never ever fall on the pressure永远不要被压力给压垮了Desperate times" get desperate mesure要是没希望了,就破釜沉舟给他一击吧Damn digged a dug该死的,我真的超爱这样Like "em run state mag cause we living it up就像不断散波的杂志媒体,因为我们正活在当下Shelve tops is on现在杂志已经上架了And I pop it" like i"m popping我上了封面,我懒得再去诠释Like a popping sin call每次都是多说多错And now" I don"t wanna take you而现在,我不想再抓住你If we fall dow如果我们坠落了Don"t get upset" and now it"s just the beginning不要难过,因为这只是个开始而已And we"ll figure it somehow而我们该去想办法盤算一下Right now masquerade" master the mary go round现在开始伪装吧,把一切耍得团团转Right now masquerade" master the mary go round现在开始伪装吧,把一切耍得团团转Right" now" it"s something you created就是现在,你去搞点东西出来It"s never ever too late这永远都不会太晚It"s never ever too late这永远都不会太晚Right now现在Okay to make a mistake好吧,去弄些大问题出来Yeah baby this is your day耶~宝贝,这是属於你的日子It"s time to masquerade是时候开始伪装了I"ma call ya afro cause you never bald我或许称你是个黑鬼,因为你从不枯燥F-ck all you bitches and i"ll never call去你的,我可从没讲过Next day" suck my test day第二天,就是我该死的测验日I aint" playing games我可不是玩游戏而已Bit my check mateRing 019" ring 019" ring 019拨打019All my party people let me ya one time我派对上的嘉宾,这次就让我..Right now masquerade" master the mary go round现在开始伪装吧,把一切耍得团团转Right now masquerade" master the mary go round现在开始伪装吧,把一切耍得团团转Right" now" it"s something you created就是现在,你去搞点东西出来It"s never ever too late这永远都不会太晚It"s never ever too late这永远都不会太晚Right now现在Okay to make a mistake好吧,去弄些大问题出来Yeah baby this is your day耶~宝贝,这是属於你的日子It"s time to masquerade是时候开始伪装了Right now
2023-08-11 07:44:381

tranexamic acid是什么意思

氨甲环酸双语对照词典结果:tranexamic acid凝血酸,氨甲环酸; 以上结果来自金山词霸网络释义1. 止血环酸收起例句:1.Aim: to observe the effect of topical application of tranexamic acid andamikacin in preventing hemorrhage after tonsillectomy. 目的:观察局部应用氨甲环酸及阿米卡星预防扁桃体切除术后出血的效果。2.Aim: to study the effect of trasylol and tranexamic acid on alleviatingdegradation speed of fibrin glue stand. 目的:研究抑肽酶和氨甲环酸对于减缓纤维蛋白胶支架降解速度的作用。
2023-08-11 07:44:591

结膜的英语翻译 结膜用英语怎么说

结膜的英语翻译:conjunctiva
2023-08-11 07:45:093

什么产品既美容又抗衰老的?

FANCL饮料..但要长期坚持
2023-08-11 07:45:384

虫牙怎么治疗

你好牙齿发生蛀牙以后是可以到口腔科进行补牙来治疗的,意见建议:一般也是只有这一种补牙的方法,只要是没有牙髓感染的去净腐质以后直接进行补牙就可以,
2023-08-11 07:46:005

Nuclear Engineering and Design 期刊 标题右上角五星代表什么?

这个五角星是对这篇文章的基本信息的注释。中文期刊中大多数用“*”。请看本页左下角的文字:☆ On invitation, to be published 2013 in Nuclear Engineering & Design, special issueon: The 14th International Topical Meeting on Nuclear Reactor Thermal Hydraulics(NURETH-14) Toronto, Ontario, Canada, September 25–29, 2011.E-mail address: groetzbach@kit.edu
2023-08-11 07:46:301

How the relations between language and culture?写200字英文小文章?

The relationship between language and culture It is difficult to say whether language affect the culture or the opposite.But the point we couldn"t deny is that when we mention the language,it"s inevitably to think about its culture.They are bounded to each other.Language and culture are existed at the same time.If there"s no language,then culture is nothing.It"s the premise of the cultural formation and development,and the cultural development has also enriched the language.Language is an important symbol that distinguished human beings from animals.It"s said that there are many mons between them in terms of the biology.But people have the language that animals don"t have.Then religions,belief,morality,custom that belong to culture have been exited.Humans have created culture by taking advantage of language,and in turn,culture has promoted humans toward greater progress.The cultural heritage of human society has embedded the language with a deep mark since ancient times.The human language exists in human culture,it has close relations with human society.Language is an access to understand another culture.It"s a window through which you can find another world.If you want to learn a foreign culture,you have to experience by yourself and by your heart.And the only mean is language.Only after master a foreign language can you bee a part of that society,otherwise the feelings you"ve got are that of others.This kind of feeling will change a bit every through a tran *** ission.It"s not enough to master a foreign language.You also have to know the culture well otherwise we don"t know what others are talking about.Like sometimes watching American movies,I don"t know what the performers are laughing at.Like reading an essay,I can"t realize what the author is trying to express even though I know every world.“He is the person that waves feather fan.” If a Chinese learner wants to know what it means,he has to study the Chinese cultural backgrounds.So foreign language learners have to explore the culture,like how to greet each other,how to introduce guests,how to give and receive gifts,just to name a few.The native speakers learn the cultural knowledge unconsciously.These differences are not the maters of grammar or vocabulary,but the language use rules.It is difficult for language learners to master because of the lack of cultural environment.It"s a general topical.Here I just have talked a few points about the relationship between language and culture.In summary,language is a part of culture,but the most special part which can represent some elements of culture.And in turn,culture has strongly influenced and shaped the language.,4,
2023-08-11 07:46:371

基因重组技术与转基因技术有什么区别

转基因是指运用科学手段从某种生物中提取所需要的基因,将其转入另一种生物中,使与另一种生物的基因进行重组,从而产生特定的具有变异遗传性状的物质。基因重组是指非等位基因间的重新组合。能产生大量的变异类型,但只产生新的基因型,不产生新的基因。它们之间的差别就是一个是原来生物体内的不同基因重新组合产生新的基因型;一个是将一种生物的基因转入另一种生物中,转基因技术可以看做是广泛意义上的基因重组
2023-08-11 07:41:223

谁能给我初三化学最基础的知识大全阿,现在要中考了,化学一点f都不会做,有些字母和化学方程式 化合价

保重。
2023-08-11 07:41:252

Maru是什么品种的猫?

Maru:土耳其安卡拉猫又称安卡拉猫,是最占老的长毛猫品种之一,原产于土耳其,并以首都安卡拉命名。16世纪进入意大利和法国,1970年制定出标准并得到众多猫协会的承认。特性:安卡拉猫聪明敏捷,独立性强,生性好动,幼猫喜欢嬉闹玩耍,易于调教。头:安卡拉猫头长而尖,呈楔形。眼:杏仁眼,多为蓝色、琥珀色、金黄色、鸳鸯眼色。耳:耳大直立,耳内长有很具特色的饰毛。身体:躯体属东方型苗条体型,背部起伏较大。四肢:四肢高而细,脚趾长满饰毛。尾:尾毛蓬松,有时尾巴一直能盘伸到头后脑,优雅柔顺的外表,使整体散发出一股流畅的动感美。被毛:以白毛为主,也有红色、蓝色、黑色等。
2023-08-11 07:41:311

科学小实验及原理是什么?

科学小实验及原理是:1、轨道怪坡我们生活中的每个物体都会受到地球引力的作用,这个力就是重力。由于重力的作用,物体的重心都有向下运动(落下或滚下)的趋势,让它的重心不断降低。而本实验中,当两个操纵杆平行的时候,小球重心与两木杆平行,所以小球由木杆高处往低处滚动。当木杆较高处慢慢分开时,小球在木杆开口最大地方,重心比木杆最低处更低。所以小球趋向于向木杆开口更大、重心更低的方向滚动,形成“怪坡”现象。2、纸币妙扣回形针当轻轻拉动纸币两端回形针会滑到一起,但是这个时候回形针还在纸币上。如果再用力一拉,回形针会克服它夹紧的力。由于是突然别在一起,回形针的弹力就把3个回形针弹出去,它们就能串在一起了。生活中你把钥匙放入钥匙扣时,也会遇到这种情况,会有咔嚓一下的弹力。3、迟钝的硬币这个实验要归功于牛顿第一定律。牛顿说过,运动中的物体习惯保持运动状态,静止的物体习惯保持静止状态——除非有外力施加在它们身上。因此硬币想做的事情就是“赖着不走”。在这个实验中卡牌受力瞬间被移开后,硬币失去了承载物,而此时硬币几乎不受力,在惯性作用下“赖在原地”,后在重力作用下掉落杯中。4、投石器当我们压住初级版投石器的筷子时,力被存储到了弯曲的杆子中间,当我们松开手,杆子恢复成直线所产生的力,就会把物体投射出去。当我们压住升级版投石器的筷子时,皮筋发生变形,变形储存了能量,这种能量使得皮筋有恢复成原来状态的趋势,这种能量称之为弹性势能。当我们松开手,皮筋释放弹性,所产生的力使得物体被投射出去。5、马德堡半球刚开始我们将两个半球紧密合拢,无须用力就会分开,这是因为球内球外都有大气压力的作用,它们之间的作用相互抵消,平衡了。后来我们用针筒把球中的空气抽出,球内空气压强减小,球外的大气紧紧地压住这两个半球,所以我们很难拉开它们。
2023-08-11 07:41:341

求初中化学的化学公式

Zn+Ag2O+H2O=Zn(OH)2+2Ag
2023-08-11 07:41:362

摩飞无雾加湿器为什么出热气?

这个不是热气,是雾化器的效果
2023-08-11 07:41:372

日本有什么猫,日本挺有名的猫 maru 属于什么品种》》?

提起日本有什么猫,大家都知道,有人问日本挺有名的猫 maru 属于什么品种》》?另外,还有人想问浅谈日本的“猫文化”有哪些?你知道这是怎么回事?其实请问日本最早是什么时候出现猫的?下面就一起来看看日本挺有名的猫 maru 属于什么品种》》?希望能够帮助到大家! 日本有什么猫 1、日本有什么猫:日本挺有名的猫 maru 属于什么品种》》? maru是圆的意思,应该就是圆圆的品种日本猫品种。 苏格兰折耳猫日本三大猫品种。 Maru 国籍:日本 日本名:まる 绰号:箱子猫 血统:美短和苏格兰折耳的混血日本本土猫品种。 萌点:身子圆、眼睛圆、脑袋圆,大腹便便的身躯,日本宠物猫名字。 爱好:爱好就是钻盒子,它亦爱幻想自己拥有完美身材,时常钻箱子 Maru在日本同样拥有超高的人气,经常演上封面。Maru从洞里望过去便成了带有最潮发型的“潮猫”。看习惯了猫叔云淡风轻的表演,不欣赏Maru调皮的性格。日系猫咪名字。 2、日本有什么猫:浅谈日本的“猫文化”有哪些? 猫是日本最喜爱的宠物,在心中有着特殊的地位。喜欢借助猫来表达自己的感受,在长期的生活中逐渐形成了独树一帜的猫文化。在日本的许多商店或者院里,有一种质地大都是瓷制品的猫的摆设品,在日语中称之为:招猫。其特点是呈坐立状,一只手向上举起,大致举至猫耳处,手握起,指甲向外,貌似向人招手,邀人靠近,通常另一只手握签钱票,上有“千万两”字样或写有“祝”字样的祝福签。通常,举右手是表示能招来财富,举左手是表示能招来客人。可是,左右手的说法好像因地而异。在颜色上有三毛,白猫,黑猫,虹红猫,金猫等。其意义有招福、开运、招财进宝之说,作为日本的一种民俗文化,已有相当的历史。在日本,猫是高贵的、有神性的。 3、日本有什么猫:请问日本最早是什么时候出现猫的? 我记得在日本动画片《一休》中有一集的背景知识上介绍说日本现存有关猫最早的记载是在嵯峨的日记里,不过动画的可信度还是有待商榷的。 请问日本最早是什么时候出现猫的? 我见到的最早的记录是在公元年完成的世界部长篇写实性《源氏物语》,那时的认为梦见猫等走兽是怀孕的象征,而且当时养猫是贵族才有的权利,而且大都是中国进口过去的哦。日本猫品种和图片。 当然,像1楼说的,日本有其品种(有人认为是从中国传过去的,但目前没有证据证明),那就是日本短尾猫。 日本短尾猫: http://ke..com/view/.html?wtp=tt 4、日本有什么猫:眼里的猫是什么样子的? 对猫的喜爱原因各种说法众多: 1)日本属于重度渔业国度,所以对稻米的珍惜程度,较之中国北方尤甚。 捕鼠护粮,防治鼠害之类的功效,对尤为重要。日本布偶猫。 2)早期日本只有贵族才能养得起猫:《不可思议的猫的日本史》考证,猫是日本到中国的遣唐使带回去的。猫首先出现在日本里,成为贵族的宠物,到了江户时代,才进入“寻常百姓家”。日本古典文学作品《草枕子》、《源氏物语》等里面都有关于“猫”的故事。另有大量德川家康与猫之类的故事。所以直至,猫在眼中仍旧有浓厚的贵族气息。 3)日本关于猫的演绎故事颇多。例如:豪德如今香火旺盛,但它在日本江户时代初期却门可罗雀。当时的,养了一只猫。某天,彦根城主井伊直孝与家臣们路过豪德门口时,看到一只猫“举手”在招呼他们,便下马入休息。刚进,外头竟冷不防雷雨交加起来。井伊直孝认为是猫招他们进来,使他们躲过雷雨,这是一种因缘。后来,豪德就在井伊家的之下,香火旺盛起来。现而今该别名为“猫”。豪德的猫,堪比卢沟桥的狮子——盖此据悉为招财猫的起源。另一关于招财猫的起源故事:在一百五十年前江户时代的街吉原,有位名叫薄云的花魁。她非常喜爱猫,养了一只三,取名为“玉”(Tama)。主人与猫形影不离,甚至连薄云上厕所时,猫也会跟在身后。不久,人们开始谣传猫会令人迷心窍,说薄云肯定是中了猫。院主深恐谣传会影响到薄云的人望,命令薄云丢弃Tama。薄云当然不肯答应,照常爱猫如命。院主一筹莫展,只好趁某天猫又跟在薄云身后进入厕所时,拔刀斩去猫首。巧的是,猫首飞落进茅坑内,院主凑头一看,竟发现猫首咬住一条蛇首。这才知道,原来(Tama)是为了守护主人,才会跟进厕所的。薄云不胜悲痛,便将(Tama)的尸骸送到院,并立了一座猫冢。之后,有位游客同情薄云的哀伤,特地从长崎订购了沉香木,刻成招财猫的模样,送给薄云。薄云大喜,爱不释手。风声传到整个江户,薄云反而益加有名了。薄云过世后,她的木雕招财猫同样被送到(Tama)的院内,与真正的Tama相伴。不过,日后院发生火灾,也就失去证据了。据说,薄云生前,有人同样用沉香木雕刻了招财猫,在浅草兜售。招财猫举“右手”是表示能招来财富,举“左手”是表示能招来客人:年,浅草有位老太婆养了一只老猫的,因为老伴过世,经济拮据,只好投靠亲戚家。老太婆洒泪与老猫诀别后,当天夜晚做了一个梦。梦中,老猫告诉主人说,如果制作一座它的偶像,必定会福德自来。老太婆听从老猫的托梦,将猫偶像在神龛上,朝晚合掌叩拜。之后,果然如老猫所说,喜报接二连三,老太婆也不用再寄人篱下了。到旧居后,老太婆因猫偶像而致富的传言,马上遍及左邻右舍,每天都有人来向她借猫偶像。于是老太婆便托窑户制作陶器招财猫,出借给来访的人。后脆在浅草开了一家专门今户烧招财猫的商店,生意兴隆。老太婆制作的招财猫,据说为了与薄云的沉香木招财猫对抗,故意将猫洗脸的手,改为右手。薄云的沉香木招财猫,举的是左手。 4)猫被普遍认为是有灵性的动物,遍布日本各种和之间。在日语里面,有是“神各奉”,说的是和院各自尊奉自己的。但是,对猫则有所不同了。在日本,一些和院里面都着猫。日本文化学家直江广治在《日本文化史词典》“猫”的条目中写道,日本这种特殊的“神共奉”猫的现象,显示出猫在之间的跨越性特征。它已经成为一种代表“财缘”和“情缘”的文化号。此处未有原文考证,但是这很容易与日本各式动漫中的猫形象连接起来。 5)“猫”成为日语中的一种标的表示方式:日语中很多词语与猫有关,使用频率极高,这些词语和猫的特性有关,生动形象、诙谐幽默。比如,用“猫眼”描述瞬息万变,“艺妓”俗称为“猫”。不能吃热东西的人被称为“猫舌”,把面积狭窄称为“猫额”,把软头发称为“猫毛”。而“老鼠药”在日本叫做“不需要猫”。每到新年的时候,人们在家中都会为老鼠年糕,称其为给“老鼠的压岁钱”,祈求这一年不要出现“鼠害”。当老鼠被神化的时候,猫就要受“委屈”,这个时候“猫”不能叫“猫”,而要叫“皮袋”。每年2月22日在日本被称为“猫日”。因为猫叫的声音与日语“2”的发音非常相似。日本所有动漫猫名字。 以上就是与日本挺有名的猫 maru 属于什么品种》》?相关内容,是关于日本挺有名的猫 maru 属于什么品种》》?的分享。看完日本有什么猫后,希望这对大家有所帮助!
2023-08-11 07:41:391

日本有名的猫,日本最出名的猫叫什么?

提起日本有名的猫,大家都知道,有人问日本最出名的猫叫什么?另外,还有人想问世界上有名的猫有哪些?像日本的猫叔。你知道这是怎么回事?其实日本挺有名的猫 maru 属于什么品种》》?下面就一起来看看日本最出名的猫叫什么?希望能够帮助到大家! 日本有名的猫 1、日本有名的猫:日本最出名的猫叫什么? 猫叔日本有一只特别出名吗猫。 2、日本有名的猫:世界上有名的猫有哪些?像日本的猫叔。 你可以去猫吧看看。 3、日本有名的猫:日本挺有名的猫 maru 属于什么品种》》? maru是圆的意思,应该就是圆圆的品种 苏格兰折耳猫 Maru 国籍:日本 日本名:まる 绰号:箱子猫 日本挺有名的猫 maru 属于什么品种》》? 血统:美短和苏格兰折耳的混血 萌点:身子圆、眼睛圆、脑袋圆,大腹便便的身躯, 爱好:爱好就是钻盒子,它亦爱幻想自己拥有完美身材,时常钻箱子 Maru在日本同样拥有超高的人气,经常演上封面。Maru从洞里望过去便成了带有最潮发型的“潮猫”。看习惯了猫叔云淡风轻的表演,不欣赏Maru调皮的性格。 4、日本有名的猫:日本动漫有哪些出名的猫,除了龙猫 《夏目友人帐》娘口三三 《尾》哈比气猫。 《哆啦a梦》机器猫日本三大猫。 望采纳,游戏go日本有名的猫形象。 5、日本有名的猫:这猫叫啥名字啊,日本的,求大图啊 猫叔,即篮子猫(日语:かご猫,年3月8日-)超级明星猫,真名叫大白,出生于日本岩手县一户农民家庭,其主人为它设置博客,每日更新,最初以头顶万物的造型和无忧无虑的生活状态而风靡日本,被誉为“”和“世界上最知足悠闲的猫”。后因有中国网民在新浪微博设置上传其可爱的照片和,加上它相当于人类50多岁的年龄、淡定无神态,而被中国网民亲切的称为“猫叔”,成为网络热点。 6、日本有名的猫:被誉为世界名猫的日本短尾猫,它究竟是怎样的存在? 日本的短尾猫在日本非常受欢迎,很多家庭都会饲养,这种猫又叫做截尾猫,是由于基因突变而产生的新品种,它在日本本土已经有多年的历史,有人认为它是多年前由中国或者传入日本的。跳出于对于它尾巴的科学解释,由于短尾猫的历史非常的悠久,因此还诞生了非常多关于短尾猫的,都是非常有趣的故事。 为什么会那么喜欢短尾猫呢?因为他们觉得长尾巴的猫在岁数大了之后,会长出很多条尾巴,然后变成猫,对人们的生活不利,而他们也把长尾巴的猫看作不吉利的代表,于是会提前把猫咪的尾巴砍掉,久而久之,日本就剩下了非常多短尾巴的猫。还有一个名叫“火猫闹都城”的故事,猫这种生物进入日本后就得到了非常好的待遇,并且住在皇宫里,养尊处优,比人的生活还好。有有一只猫睡觉的时候不小心被火烧了尾巴,它焦急地到处乱跑,结果引燃旁边的东西,致使皇宫起了大火。非常的生气,从此下令把所有猫的尾巴砍掉,这就诞生了日本的短尾猫。关于她的传闻,还有非常多,但是其中的真实性却令人不得而知啦。 很多人都可能不知道日本的短尾猫,其实就是招财猫的原身,招财猫的典型动作也是由短尾猫的动作变化而来。日本的短尾猫喜欢像兔子一样,坐在自己的后脚上,并且偶尔抬起小爪,人们觉得这种猫特别的可爱。而短尾猫中三色短尾猫是的,它也被视为吉利的象征,于是左手招财,右手招福的三色短尾猫形象深入人心,慢慢的就演变成了招财猫,它的模型也远销世界各地。 以上就是与日本最出名的猫叫什么?相关内容,是关于日本最出名的猫叫什么?的分享。看完日本有名的猫后,希望这对大家有所帮助!
2023-08-11 07:41:211

元素周期表的历史

现代化学的元素周期律是1869年俄国科学家门捷列夫(DmitriMendeleev)首创的,他将当时已知的63种元素依原子量大小并以表的形式排列,把有相似化学性质的元素放在同一行,就是元素周期表的雏形。利用周期表,门捷列夫成功的预测当时尚未发现的元素的特性(镓、钪、锗)。1913年英国科学家莫色勒利用阴极射线撞击金属产生X射线,发现原子序越大,X射线的频率就越高,因此他认为核的正电荷决定了元素的化学性质,并把元素依照核内正电荷(即质子数或原子序)排列,经过多年修订后才成为当代的周期表。在周期表中,元素是以元素的原子序排列,最小的排行最先。表中一横行称为一个周期,一列称为一个族。
2023-08-11 07:41:172

maru什么意思

maru ["ma:ru]丸(尤指日本商船)
2023-08-11 07:41:143

化学问题

多看书,复习笔记,复习重要知识点,重要的方程式背过
2023-08-11 07:41:064

怎么把中文名字翻译成英文

给你找了几个音近之词Pancho自由之意出自西班牙语Benson(希伯来英文)"SonofBenjamin"班杰明的儿
2023-08-11 07:41:058

日语的马卤是什么意思

まる[丸][まる] [maru] ◎ 【名词】1.【接头】圆形;圈儿,表示正确、优良等的○形符号;金钱;区,城郭内部的一个区划;完全,整个;全部。【接头/接尾】1.丸,专用于幼儿名;日本用于刀、乐器及其他器物的名;〔日本用于船名〕号,轮,丸。[円][まる] [maru] ◎【名词】1.圆形。平面的圆形。(まるい形。)2.(隐语)钱。金钱。(金銭の隠语。)3.(日本关西地区方言。因甲壳为圆形,故称)甲鱼。(上方で、スッポンの异称。)[マル][まる] [maru] ◎ 【名词】1.【英】mull;漂白细软薄布;人造丝薄绸。(薄手の绵モスリン。)
2023-08-11 07:41:051