barriers / 阅读 / 详情

oracle使用order by和rownum效率很慢,有没有提升的办法

2023-07-12 20:02:49
共1条回复
可可

这2个有什么关系,rownum是伪列,不是用户设计的,oracle自动添加的一串字符串,用户select *是看不到了,除非select rownum才行,是用来标识这行的数据块位置,order by是排序,后面跟的是表的实际列,就是更用户自己设计的字段。

相关推荐

mysql里面order by 6是什么意思?

这是sql语句,意思是对某一列进行排序
2023-07-12 16:08:433

mysql中“group by、having、order by、limit”的顺序及用法是什么?

-- 语法:select select_listfrom table_name[ where search_condition ][ group by group_by_expression ][ having search_condition ][ order by order_expression [ asc | desc ] ] [limit m,n] -- 示例:-- limit 0,10是从第一条开始,取10条数据select classno from table_name group by classno having(avg(成绩)>70) order by classno limit 0,10
2023-07-12 16:09:092

mysql表数据已排序好,order by查询速度会不会更快

不会更快因为数据库本身不知道这个数据是否有序.orderby是数据库查询的最后一步.执行顺序在select,where等等过滤条件之后.由于数据库本身不知道是否有序,所以必然会执行orderby进行排序.只不过排序是在内存中进行判断,并且排序的结果不需要变而已,但还是需要执行排序,进行数据比对.所以不会更快.ps:既然数据表已经是有序的...为什么还要orderby排序?直接用limit进行切片就好了阿?这不是多次一举吗?
2023-07-12 16:09:181

order by字段建索引有作用吗

select*fromtestorderbyiddesc这样应该是没用的,因为你的索引是单列索引,扫描了索引之后还要扫描表,性能明显不如全表扫描,如果可以,你可以试试selectidfromtestorderbyiddesc,这样就可以索引快速全扫描啦.
2023-07-12 16:09:251

hana group by 和order by的区别

order by 用于排序,一般与asc升序或desc降序一起使用.例:select * from 表A order by 列agroup by 用于分类汇总,一般与聚合函数(比如avg平均、sum合计、max最大、min最小、count计算行)一起使用。例:select 月份,sum(工资)as 总工资 from 工资表 group by 月份 此语句用于统计每个月的日总工资在使用group by的语句中,只能select用于分类的列(表达式),或聚合函数。where条件用于group by之前,having用于group by 之后对结果进行筛选。
2023-07-12 16:09:321

oracle中,还是不甚明白order by和group by的用法

一个排序 一个分组 怎么不明白呀 不是一个意义呀一个是用来改结果集的顺序的一个是用来统计某些字段信息的group by 不带排序功能你可以group by了之后 order by 1,2
2023-07-12 16:09:404

怎样用Order By子句给中文排序

ORDER BY查询结进行排序默认按顺序排序ORDER BY 字段 DESC 按倒序排序-
2023-07-12 16:09:521

order by 和union all 如何共存

select id,cc,ddfrom (Select id,cc,dd from A union all select id ,cc,dd from B)order by id
2023-07-12 16:10:004

如何提高亿级别 mysql group by order by 效率

1、使用用索引注意有些情况下不能够使用索引来提高Order By语句的查询性能。这里需要注意的是,并不是任何情况下都能够通过使用索引来提高Order Byz子句的查询效率。如对不同的关键字使用这个语句、混合使用ASC模式和DESC模式、用于查询条件的关键字与Order By语句中所使用的关键字不同、对关键字的非连续元素使用Order By子句、在同一条语句中使用不同的Order BY 和Group BY表达式、使用的表索引的类型不能够按顺序来保存行等情况,就无法通过使用索引来解决Order By语句的排序问题。此时就需要另想他法。如可以重新调整表结构或者查询语句,以满足使用这个特性的特定条件。通常情况下,为了避免使用Order By语句导致的查询速度变慢的问题,先是需要考虑使用索引来解决问题。如果不能够通过索引来解决问题,那么可以通过缓存在一定程度来缓解。如可以增加soft_buffer_size变量的大小、根据实际情况调整Read_buffer_size变量的大小、更改tmpdir目录将其指向具有大量空闲空间的专用文件系统等等。有时候管理员可以使用这个特性将负载均匀分布到多个目录中去。2、使用Explain关键字来确认是否可以通过索引来解决Order BY速度问题。如可以通过使用explain select * from ad_user where is_active="Y" order by value(即在常规的查询语句前面加上一个explain关键字),用来判断是否可以使用索引来提高查询的效率。判断的方法是:如果这个查询语句中,有一个using filesort这个字段,那么就非常的抱歉,无法通过使用索引来提高这个语句的查询效率。反之,没有这个字段,则说明可以通过索引来提高查询效率。3、分页优化分页程序原理很简单,这里就不多说了。
2023-07-12 16:10:211

在数据库查询中order by 后面可以给表达式吗?

你好!什么表达式啊?ORACLE数据库ORDERBY后面,加减乘除,decode,sign,casewhen,nvl这些都可以跟。你最好在自己数据库中测试一下我的回答你还满意吗~~
2023-07-12 16:10:292

sql 查询执行顺序是 先top 还是先order by?

是先order by 再 top
2023-07-12 16:10:374

21《MySQL 教程》ORDER BY 排序

前面小节介绍了如何查询数据,并且介绍了如何使用 WHERE 条件对查询的数据结果集进行筛选,本小节介绍如何使用 ORDER BY 对查询结果集进行排序,排序在实际业务中非常有必要,可以较好地对结果集数据分析和处理。 ASC 是对结果集按照字段从小到大排序(升序),以 teacher 表为例,将查询出来的所有结果集按照年龄 age 从小到大排序: 执行结果如下图: DESC 是对结果集按照字段从大到小排序(降序),以 teacher 表为例,将查询出来的所有结果集按照年龄 id 从大到小排序: 执行结果如下图: 以 teacher 表为例,将查询出来的结果集按照 age 从大到小排序之后,再按照 id 字段从小到大排序: 执行结果如下图: 前面排序的 age 和 id 字段是 int 类型,为了演示方便这里先插入几个 name 字段为英文名的教师测试数据,并对 name 字段排序,插入数据 SQL 语句如下: 对查询结果集按照 name 字段 ASC 升序排序: 执行结果如下图: 本小节介绍了如何使用 ORDER BY 对查询结果集按照值字段排序,其中包括 ASC 升序和 DESC 降序,需要注意的是各种数据的字符集可能不同,如中文字符编码 GBK编码、utf-8编码, 若需要经常对字符串类型字段进行排序,可以给该字符串字段加上普通 Bree索引,二级索引树字符串默认存储方式是按照字符集升序存储的(MySQL8.0 可自定义排序存储方式),所以有索引的字段排序性能比没有索引的字段排序性能好。
2023-07-12 16:10:451

SQL中,group by 跟order by有啥区别?

SQL中,group by 跟order by有啥区别? GROUP BY 是分组,主要用于统计,合计等SQL中使用 比如: select userid,count(*) as t from usercount group by userid; order by 是排序,即按什么字段来排序,顺序或倒序。 在group by 中可以使用order by 如: select userid,count(*) as t from usercount group by userid order by t (倒序时添加 desc) sql中order by和group by的区别 order by 是按表中某字段排列表中数据 group by 是按某些字段分类。 例如按 1.按年龄排序表中的记录 select * from users order by age 2.按年龄分类表中数据 (就是求各个年龄的人数) select age,count(*) as number1 from users group by age 再SQL 中order by和group by 有什么区别? order by 是排序 group by 是分组 ethnic group 和 nationality 有啥区别? ethnic group n.同种同文化之民族 Being a member of a particular ethnic group. 种族一员的,作为一特定种族集团中的成员的 a joke at the expense of some ethnic group.开某一种族玩笑的笑话。 A member of the principal ethnic group of Hungary. 马札尔人,匈牙利一个主要的少数民族 nationality n.国籍, 国家, 部落, 民族, 民族性 Achang nationality 阿昌族 minority nationality 少数民族 nationality areas 民族聚居地区 British nationality 英国国籍 order by 和 group by 的区别 在计算机中: order by 从英文里理解就是行的排序方式,默认的为升序。 order by 后面必须列出排序的字段名,可以是多个字段名。 group by 从英文里理解就是分组。必须有“聚合函数”来配合才能使用,使用时至少需要一个分组标志字段。 作为英语: order by 排序;排序依据;分组排序 例句: 1.An index will be used for both an ascending and a descending ORDER BY,whether the index was ascending or descending. 不管索引是升序排列还是降序排列,在执行升序或降序ORDERBY操作时都会使用索引。 2.Analytic functions are the last set of operations performed in a query except for the final ORDER BY clause. 除了ORDERBY(按…排序)语句外,分析函数是一条查询被执行的操作。 group by分组;将表按行分组;分组依据 例句: 1.The List To Group projection can only be used for lists, and it turns the list into agroup by retaining only the first item of the list. ListToGroup映射仅可用于列表,它通过仅保留列表的第一个项目将列表转化成一个组。 2.Indicates that the data column is being used to create a grouped result set (ispart of a GROUP BY clause) in an aggregate query. 表示数据列用于在聚合查询中创建分组的结果集(GROUPBY子句的一部分)。 order by 意思是“根据……排序”,例如按时间、名称、大小排序等;group by 意思是“按……分组”,例如按文件类型分组。
2023-07-12 16:11:041

sql中order by是根据什么排序的

是根据字段名进行排序的,具体是根据哪一个字段,可以自己设置.如select*from表名orderby字段名以上就是orderby的具体用法.
2023-07-12 16:11:481

asp中的order by 有什么用

order by 是排序的关键字 跟字段 比如:select * from table_name order by [_id]asp中用数据库的对象执行此条语句得到排序的结果集数据参考 http://www.knowsky.com/article.asp?typeid=171
2023-07-12 16:12:141

order by 怎么按指定的顺序排序

举个例子吧: order by id desc,time desc 先是按 id 降序排列 (优先) 如果 id 字段 有些是一样的话 再按time 降序排列 (前提是满足id降序排列)
2023-07-12 16:12:331

SQL中orderby排序有问题,求解决

--晕!--可能是你没有注意到吧。--其实在你写的语句里去掉"业务编号"里的""就可以了!select*fromtable1orderbysubstring(业务编号,6,8)
2023-07-12 16:12:422

oracle中在in子查询语句中order by排序能否用?

SELECT * FROM (SELECT ORG_ID,ORG_NAME,ORG_PARENT_ID FROM ORG_MASTER WHERE ORG_PARENT_ID=1 ORDER BY ORG_ORDER) AND ROWNUM <=30;你是想查询出县的数据排序并取前30条对吧~!使用上述语句~!
2023-07-12 16:12:506

SQL注入 order by后的注入(Less-46)

常见注入虽然都是在用户id,帐号密码等地方进行注入,但有时也可能出现注入点在order by语句之后,如下图所示: 由于order by往往是放在语句的最后,后面能输入的内容十分有限,所以此时我们就不能用原先那样传统的方式进行注入了,但只要稍微改变一下结构还是可以进行注入的。不过在此之前我们需要学会判断其是否在order by后面,方法很简单,在参数后面加个asc(结果升序显示)、desc(结果降序显示)来观察其顺序是否改变就行了,如图(这里传入参数不是id,是sort)。 此时说明其为order by后的注入,接下来我们判断order by后面接的参数有没有影响,尝试注入: left(version() ,1)和 right(version(),1) ,发现结果没影响,说明后面参数随意,则此时我们可以进行注入,有以下三种注入方式: ① 直接在sort的参数里注入,如: sort=(select username from users limit 0,1)--+ ,此时将会显示当前表的内容,如图。这里要注意不论我们注入任何查询,结果能显示的基本都是有限的,我们无法查询到我们查询的信息,例如这里我们注入: sort=(select group_concat(email_id) from emails)--+ ,结果依旧是只能看当前表的内容。所以这里就是相当于一种只有通过盲注才能获取到信息的状态,于是对于这种order by后的注入我们一般使用盲注,这里我们使用报错注入(当然其他盲注也都可以尝试): sort= (updatexml (1, concat (0x7e,(select database()),0x7e),1))--+ ,如图发现成功报错:。② 使用一些函数,如rand()等,例如: sort=rand(updatexml(1,concat(0x7e,(select database()),0x7e),1))--+ ,结果一样,就不赘述了。 ③ 在后面加and,再加入其他语句,例如: sort=1 and updatexml (1,concat (0x7e, (select database()),0x7e),1)--+ ,结果也一样。
2023-07-12 16:13:031

order by字符串排序是根据什么排序的?

根据 Id
2023-07-12 16:13:236

order by 是检索整个表的吗?查询语句怎么提高Order by top?

select top 10 * from tb where name=2 order by mid这个表示全表Order by,但是只取前10个数据
2023-07-12 16:13:393

数据库中order by 省略asc

可以省略,比如:order by a,b desc 表示a升序,b降序order by a desc,b 表示a降序,b升序
2023-07-12 16:13:481

同个sql中,如何用group by 和 order by,想要order by的是sum出的一列,可总是出错。

你order by 后面用 sum(ding.ord_amt)试试你要明白一个,你现在是先分组,后排序,而分组后,就是一个统计表,你用详情表的字段来决定统计表的排序,这个是不是不对呢?其他的排序方式你参考1楼的就可以了,他已经讲得挺详细了
2023-07-12 16:14:112

mysql order by默认是升序还是降序

sql语言的默认排序方式是升序,orderby子句若未显式指定升序(asc)或降序(desc),那么就认按默认升序排序。例如下列语句为默认按升序排序select*fromt1orderbycol1;它与下列语句等效select*fromt1orderbycol1asc;
2023-07-12 16:14:261

数据库中 order by 后面使用多个字段的问题

我的理解是数据库中的记录本来是无序的,如果top没有加字段的话,应该是“随机?”选取记录,如果是有字段后面没有排列则选取字段中的前n位,这一部分我没有搞清楚,你需要自己实验下,SQL我只是有理论没用过的说。如果有字段加了orderby后order by OrderDate ,OrderID desc将记录按照OrderDate降序排列,然后再按照OrderID降序排列,然后记录就变成有序的,从而可以选取前n条的记录。事实上我还没有弄清楚top是选取前N条记录,还是能够自己筛选大小的说。你自己试验下,就应该能弄清楚了。按照我的理解,结果都不应该有大的出入的,因为主排序应该是OrderDate,你再求高人现身说法吧看看这个http://blog.csdn.net/jion_tang88/article/details/7427763
2023-07-12 16:14:431

为什么子查询不能包含order by

可以用,需要与top N一起用 如select * from table1 where ID in(select top 10 ID from table1) 返回全表,用order by 子查询没有意义,用时要用select TOP(100) PERCENT
2023-07-12 16:15:014

oracle中,还是不甚明白order by和group by的用法

一个排序 一个分组 怎么不明白呀 不是一个意义呀一个是用来改结果集的顺序的一个是用来统计某些字段信息的group by 不带排序功能你可以group by了之后 order by 1,2
2023-07-12 16:15:164

使用order by短语排序时是否会影响表中的记录数据?

order by只是影响记录结果集,对你的源表没有丝毫影响
2023-07-12 16:15:372

在select查询语句中,order by字句表示什么?

五十六除七等于九表示56里面有9个7.希望能帮到你!
2023-07-12 16:15:483

CCTV6曾播过的20部加拿大儿童电影

进去后用搜索工具找一下 很快的!
2023-07-12 16:11:413

英语作文先烈史诗永革命先烈永垂不朽

Now the face of eternal life to the revolutionary martyrs China cannot do without the revolutionary martyrs, they flag dyed with blood, how can you let us respect? Remember Dong Cunrui? That young man dedicated to the revolution. Is he seized explosives into the enemy bunkers at the expense of their own, he was only seventeen years old! Dong Cunrui put his body as a powder support frame, with his precious life for the troops opened up the way forward. Dong Cunrui to death are missing the new China, he was saying, for the new China, Chong ah!" How many Chinese people"s hearts shocked? Comrade Dong Cunrui, you are unique, and now your story has spread throughout China and Asia. Chinese people cheer for you, cheer for you. We are proud of you! Dong Cunrui is more than a natural revolutionary martyrs.China best, the most outstanding is the emergence of many a man of character, as the hero of the revolution. Such as Li Dazhao. When it comes to Li Dazhao, no one will know it. He is a pioneer of the Communist Party of China, the great Marxist, the outstanding proletarian revolutionary, one of the main founders of the Communist Party of China, Marx, the Communist Party of China. Li Dazhao is the national peril on time. Li Dazhao changed from a patriot to a Marx. But he and most of the revolutionaries, or sacrifice, he was killed by the reactionary warlords, only thirty-eight years old. We should learn from Li Dazhao, Studying Comrade Li Dazhao"s belief in the Marx doctrine, learning his unyielding, fearless of death for a just cause. Li Dazhao left the spiritual heritage is infinite, we want to carry forward the spirit of this good quality. All of the martyrs ah, People"s Republic of China did not live up to all your efforts, you see? China"s rapid development, China"s prosperity, you throw the head, the blood of the exchange, you have to see it? Our seven o"clock sun will carry on your work, we will work hard to build a better country. Eternal life to the revolutionary martyrs!革命先烈永垂不朽中国如今的面貌离不开革命烈士,他们用鲜血染红了国旗,怎么能不让我们肃然起敬呢?还记得董存瑞吗?那个年纪轻轻就献身革命的好同志。就是他抓起炸药包勇闯敌人碉堡却牺牲了自己,他才十七岁啊!董存瑞把自己的身体充当火药支撑架,用自己宝贵的生命为部队开辟了前进的道路。董存瑞到死都挂念着新中国,他那句“为了新中国,冲啊!”震撼了多少个中国人的心灵?董存瑞同志,你是独一无二的,现在你的事迹已经传遍了整个中国、整个亚洲。中国人民为你喝彩、为你欢呼。我们以你为骄傲!革命先烈自然不止董存瑞一个。中国最好、最出色的就是出现了许多有骨气、有作为的革命英雄。如李大钊。说到李大钊,不会有人不认识吧。他是中国共产党主义的先驱,伟大的马克思主义者,杰出的无产阶级革命家,中国共产党的主要创始人之一。李大钊时期是国家和民族濒临危亡的时期。李大钊从一个爱国主义者转变为一个马克思主义者。可他和大多数革命家一样,还是牺牲了,他惨遭反动军阀的杀害,年仅三十八岁。我们要向李大钊学习,学习李大钊同志对马克思主义的坚定信仰,学习他的坚贞不屈、大义凛然。李大钊留下的精神遗产是无限大的,我们要把这种良好的精神品质发扬光大。所有的先烈们啊,中华人民共和国没有辜负你们付出的一切,你们都看到了吧?中国的飞跃发展,中国的繁荣昌盛,是你们抛头颅、洒热血换来的,你们都看到了吧?我们这些七点钟的太阳会继承你们的遗志,我们会努力学习,把国家建设得更美好。革命先烈永垂不朽!
2023-07-12 16:11:441

我想知道一些与足球有关的英语单词

FIFA
2023-07-12 16:11:456

龙舌兰可以加汤力水力喝吗?

墨西哥,传统的龙舌兰喝法十分特别,也颇需一番技巧。首先把盐巴撒在手背虎口上,用拇指和食指握一小杯纯龙舌兰酒,再用无名指和中指夹一片柠檬片。迅速舔一口虎口上的盐巴,接著把酒一饮而尽,再咬一口柠檬片,整个过程一气呵成,无论风味或是饮用技法,都堪称一绝。 一般饮用的方法有以下几种: 1..杯口抹盐加片柠檬一口饮尽 2..不加东东纯饮 3..加冰块 4..加7up...就是我们常听的 Teqila Pop用杯垫盖住酒杯用力敲下,再一饮而尽 5..加柳橙汁还有红石榴糖浆(Grenadine)让红石榴沿杯口慢慢流下,形成很漂亮 的色层...叫做Tequila Sunrise 6..加Cointreau酒再加Lime juice shake...就是赫赫有名的玛格丽特 7..用小汤匙舀一勺未煮过的咖啡(磨成粉)..一口咖啡一口酒 8..是第一种喝法的变种...限制级玩法,将盐抹在女(男)朋友的脖子上, 要他(她)含住一片柠檬...先舔过盐巴,再吸柠檬,最后将酒一饮而尽 满意请采纳
2023-07-12 16:11:471

如何使用VNC Viewer连接远程CentOS服务器

你先在centos上检测一下VNC装了吗,rpm -qa |grep vnc,装好后检测一下端口,然后在客户端VNC viewer上远程 就行了。我用的是小鸟云的服务器。
2023-07-12 16:11:472

Su-27 1:48 的模型哪一种比较好?

我认为小号手得更好一些,尤其是苏霍伊苏-27B,有轮胎橡胶圈,蚀刻片,还有座舱仪表的水贴,如果是制作模型的初学者,建议用爱德美,因为小号手苏霍伊苏-27B是为专业制作模型的高手准备的,关于更多的你可以上小号手的网站,了解更多,网站为 www.trumpeter/china.com/war513/你可以看一看产品欲览,但是价格比较贵,至于我嘛,比较喜欢小号手出品的1:72的J-8长须鲸和J-10
2023-07-12 16:11:491

五笔字根表,下面的数字代表什么?

下面那些数字代表五笔字形编码的位置。“人”下面是34就是3区4位。除了这个作用,还能代表识别码的位置。按照键盘一般的输入规则,TY、GH、BN的中间分开,左边由左手输入,右边由右手输入。G左边为一区,H右边为二区,T左边为三区,Y右边为四区,五区比较特别,就是N开始的左边为五区。G左边为横,G就是11,第一个1代表字的最后一笔画(横竖撇捺折)为横,第二个1是字形的左右结构;F就是12,最后一笔画为横,第二个2是字形的上下结构;D是13,最后一笔画为横,第二个3是字形的杂合结构。例如:足,拆开为口、u9fb0,KH;但是KH也是“中”的编码。“中”:口、|,KH,最后一笔竖2,杂合型3,2区3位是K,“中”的编码就是KHK。足,拆开为口、u9fb0,KH,最后一笔是捺4,上下型2,4区2位就是U,“足”的编码就是KHU。
2023-07-12 16:11:501

My dream is to be a teacher,because I like student very much,If I am a teacher I Will 开头的中...

My dream is to be a teacher,because I like student very much,If I am a teacher I will be a person who help them find a right way to solve problems in studying,and be a guider who tell them it"s important to be an upright man as same as studying well.If I am honor enough to be a teacher I also will be a friend as possibal as I can. Obviously, It is my favorate job to be a teacher.
2023-07-12 16:11:502

inface美容仪好用吗

使用方便我坚持每周使用这款inFace美容仪两到三次。用了之后,皮肤好了很多。我的脸看起来特别有光泽,很嫩,很紧致。另外这款美容仪防水,使用安全,续航能力强。我给手充过一次电,现在用了不到半个月,还有电,还是很好用的。我在应用蒙版时也使用导入模式。可以加快面膜的吸收,用后皮肤光滑很多。也可以配合护肤品使用。涂在脸上有轻微的震动和热感,用起来还是很舒服的。有时候工作到很晚,脸看起来肿了,肉也松了。我会用蓝光模式,上脸冰冷。用了之后真的立马变成V字脸,水肿消失,脸上的纹路也很明显。
2023-07-12 16:11:541

十大经典鸡尾酒都有哪些?

1. 玛格丽特(Margarita) 基酒:德基拉酒,辅料:柠檬汁、橙味甜酒. 2. 椰林飘香(Pina Colada) 基酒:白朗姆酒、椰子甜酒,辅料:柠檬汁、菠 萝汁、淡奶. 3. 新加坡司令(Singapore Sling) 基酒:金酒,辅料:柠檬汁、红石榴汁、 樱桃白兰地、苏打水. 4. 蓝色夏威夷(Blue Hawaii) 基酒:白色朗姆酒,辅料:蓝橙香甜酒、菠萝 汁、雪碧. 5. 激情海岸(Sex on the Beach) 基酒:金酒、伏特加、郎姆酒,辅料:水 密桃甜酒、橙汁、红石榴汁、菠萝汁. 6. 干马提尼(Dry Martini) 基酒:金酒,辅料:干味美思、绿橄榄 . 7. 环游世界(Around World) 基酒:伏特加酒,辅料:菠萝汁、绿薄荷酒. 8. 莫斯科骡子(Moscow Mule) 基酒:伏特加酒,辅料:姜啤. 9. 生锈钉(Rusty Nail) 基酒:威士忌,辅料:蜜糖甜酒. 10. 咸狗(Salty Dog)基酒:伏特加酒,辅料:西柚汁.
2023-07-12 16:11:5713

入门级导入导出美容仪——inFace离子导入导出仪

这款美容仪超级好用,而且它完全不会刺激皮肤,整个使用过程也很方便,建议小姐妹们入手用用inFace离子导入导出仪经常使用过仪器的人来说会有明显的感觉不一样。推荐新手购入这款小鸡蛋inFace离子导入导出仪,硅胶机身防水材料机身也很小很方便,重要的是操作非常方便真的是入门级好物。三种模式一个键就可以随意切换:导出模式:配合卸妆类产品、深层清洁、卸妆彻底。导入模式:配合护肤品、营养吸收加倍。修护模式:搭配修复产品、深层修复紧致肌肤。我现在一般出门都带着一个仪器,别看它小小个导入导出的效果特别好,护肤品的功效都大大提升了并且有紧致肌肤的效果。洗脸的时候借助导出会比平时洗脸感觉十倍不止。
2023-07-12 16:12:011

办公室电脑被装了vnc viewer 4,请问这是什么东西?

通过这个软件可以控制你的电脑你是被控制端他那边还有一个控制软件通过哪个软件输入你们的IP地址 就可以直接看到你们的桌面了就跟用他的电脑一样用你们的电脑你可以用QQ的远程帮助实验一下 跟哪个意思差不多
2023-07-12 16:11:383

英语翻译新年快乐,万事如意,年年有余

Happy new year and good luck in everything, every year is more than
2023-07-12 16:11:371

关于英国巡逻舰艇

极地巡逻舰(Antarctic patrol ship)坚持号[HMS Endurance (A171)]排水量6100吨,长91米,宽17.9米,吃水8.5米,两台波根(Bergen)BRM8柴油机,8160马力(6MW),最大航速15节,12节航程65000海里,无武备,携山猫直升机两架,舰员编成126人,座右铭:坚持我们征服[Fortitudine Vincimus (By Endurance We Conquer)]河级巡逻艇(River class patrol vessel)排水量1677吨,长79米,宽13.6米,吃水3.8米,两台鲁斯敦(Bergen)12RK270柴油机,4125马力(XMW),最大航速20节,12节航程7800海里,一门英国制造及科研公司[British Manufacturing and Research Company (BMARC)]KAA20炮,两挺通用机枪,不带直升机但可供一架中小型直升机(山猫或者是海皇)架,舰员编成30人,共三艘太尼[HMS Tyne (P281)],斯文尔恩[HMS Severn (P282)],马斯[MS Mersey (P283)].城堡级巡逻艇(Castle class patrol vessel)排水量427吨,长81米,宽11.5米,吃水3.6米,两台鲁斯敦(Ruston)12RKC270柴油机,5640马力(4.2MW),最大航速18节,X节航程X海里,一门英国制造及科研公司[British Manufacturing and Research Company (BMARC)]30炮,四挺L-7通用机枪,一架山猫直升机,舰员编成45人,共一艘丹巴尔敦城堡[HMS Dumbarton Castle (P265)].箭手级巡逻艇(Castle class patrol vessel)排水量54吨,长20米,宽5.8米,吃水1.9米,两台帕金森(Perkins)RR CV12涡轮增压柴油机(第一批),;两台MTU V12柴油机(第二批),5640马力(4.2MW),最大航速20节(第一批),24节(第二批),15节航程550海里,共十六艘:HMS Archer (P264), HMS Biter (P270), HMS Smiter (P272), HMS Blazer (P279),HMS Pursuer (P273), HMS Puncher (P291), HMS Charger (P292), HMS Ranger (P293), HMS Trumpeter (P294), HMS Express (P163), HMS Dasher (P280), HMS Example (P165), HMS Explorer (P164), HMS Exploit (P167), HMS Tracker (P274), HMS Raider (P275).
2023-07-12 16:11:341

求英文翻译 《我的大学生活》

High school life ended, university of ask for me to open up. It can give me more time and freedom, but this doesn"t mean that I can mix the days past. Here I got more show yourself and exercise your chance. I want to be the best I. Just entering college, discover this really different. Big and have very good environment. When the new environment will have a new I decided to change myself, to be better. The lessons at moment loose. Tighten Learn nevertheless very interesting. What interested me most course of course is English and Photoshop and constituents, etc. My university is rich and colorful, here enthusiastic students play basketball every day, and they very can organize activities, let me realize the unprecedented experience. Time passed quickly, see will celebrate the New Year. I"m glad I could come to this school, here I want to all of the classmate say: thank you, everyone.
2023-07-12 16:11:303

足球不能用手 为什么美式足球就可以呢?

因为它叫 “美式”足球
2023-07-12 16:11:287

vnc viewer 怎么使用

工具/原料 Windows7 VNC Viewer CentOS服务器 方法/步骤 双击桌面上的快捷方式,运行VNC Viewer。 输入VNC Server的IP地址,一个服务器上可以开启多个VNC服务,使用数字来标识,要连接第一个那就要输入例如:222.123.123.123:1,加密方式默认就可以了。 提示未加密的连接,没关系,点击“Continue”继续。 输入VNC Server配置的服务密码。 如果服务器配置的是root用户的话,会提示正在以超级用户运行。点击关闭。 点击保存链接图标,提示是否将密码也保存在配置文件中,如果想保存就点击Yes,否则点击No。 会弹出文件保存对话框,输入一个文件名,确定。 点击设置图标可以进入高级设置。 点击全屏图标,可以放大窗口到全屏。
2023-07-12 16:11:281

planar与face都表示面的时候,有什么区别?

face可指事物的外表等,planar表示平面的。1Iwanttodolittlepieceofcodethat"sgoingtodoplanargeometry.我想写一小段代码来做平面几何。由有道智云提供数据服务2Probeswithdifferentbeamanglescanbeusedtodetectplanardefectsatvaryinganglesoforientation.不同光束角度的探头可用于检测不同方向角度的平面缺陷。3Theoreticaloptimizationsshowthattheequilibriumgeometriesofthethreepicolinicacidmoleculesareplanar.理论优化表明,三个吡啶甲酸分子都具有平面的平衡构型。face的用法包括:befacedwith面临;facethemusic承当后果;facetoface(with)面对面;makeaface(at)皱眉头等。1.befacedwith面临。如:Theyareallfacedwiththesameproblem.他们都面临同样的问题。2.facethemusic承当后果normal">faceYou"vebeencaughtcheating----nowyoumustfacethemusic.你的骗局被戳穿了,现在你得自食其果了。3.facetoface(with)面对面,面临,当面。如:Hestoodfacetofacewithher.他与她面对面站着。Hecamefacetofacewithdeath.他面临死亡。4.in(the)faceof(1)面对。如:Heshowedgreatbraveryinfaceofdanger.在危险面前他表现出非常勇敢。(2)尽管,不顾。如:Hesucceededinthefaceofgreatdifficulties.尽管有巨大困难,但他还是成功了。5.loseface丢面了。如:Helostfacewithhisfriends.他在朋友面前丢了面子。6.makeaface(at)皱眉头,做苦相,做鬼脸。如:Hemadeafacewhenhesawthepileofwork.看到一大堆活,他皱起了眉头。注:有时face可用复数。如:Thechildrenmadefacesatoneanother.孩子们相互做鬼脸。7.pull[wear]alongface愁眉苦脸的样子,板着面孔。如:Shepulledalongfacewhensheheardthat.他听到这话之后,显示出一副不高兴的样子。8.saveface保全面子。如:Shekeptsilentaboutthatinordertosaveface.为了保全面子,她对那事只字未提。
2023-07-12 16:11:281

can can need是什么梗?

can can need就是看看你的,是一个谐音梗。也可以说是空耳,即“根据发音,听着像”。比如日语中“爱してる”的发音很像“阿姨洗铁路”。另外这个梗还有些衍生,比如show show way等。这句话出自于贴吧,比如一个网友发帖抛出一个问题再做出回答。然后再加上这句can can need,谐音的意思就是看看你的。主要是邀请别人来对这个问题进行回答,没有什么特别的含义。当然这句话单纯就是谐音,在英文字是没有这种句式的。关于英文谐音梗的趣事有一位网友发了一个说说:我今天点了一份青椒rose gay饭,也不知道老板用的什么青椒,class我了。好家伙,这一下便引起了网友们的热烈讨论:1楼:那你应该再点一份酸菜fans汤呀!2楼:我建议楼主换一份黄焖jimmy饭。3楼:要不要再来一碗皮蛋solo粥?4楼:我看楼主最需要的是一瓶冰糖shirley。5楼: 你们真是有bear来啊,个个深藏blue,楼下继续啊!
2023-07-12 16:11:288

求梅尔 吉布森的所有电影

中文译名:梅尔.吉布森 英文原名:Mel.Gibson 出生日期:1956年1月3日 星 座:魔羯座 出 生 地:纽约 职 业:导演、演员、制片 主要作品: 致命武器 (1987) Lethal Weapon 致命武器2 (1989) Lethal Weapon 2 赌城风云 (1994) Maverick 冲锋飞车队 (1981) Road Warrior 永远年轻 (1992) Forever Young 灾难岁月 (1982) Year of Living Dangerously 疯狂的马克斯3 (1985) Mad Max: Beyond Thunderdome 泰奎拉日出 (1988) Tequila Sunrise 疯狂的马克斯 (1979) Mad Max 赎金风暴(1996) Ransom 致命武器3 (1992) Lethal Weapon 3 阴谋的理论 (1997) Conspiracy Theory 轰天神鹰 (1990) Air America 电线上的鸟 (1990) Bird on a Wire 勇敢的心(1995)Braveheart 致命武器4 (1998) Lethal Weapon 4 大河 (1984) River 危险人物 (1999) Payback 简 介: 1996年美国影坛明星梅尔.吉布森给了世界一个巨大震惊,他自编自导的古装片《勇敢的心》(《Braveheart》1995)共获得了10项奥斯卡奖提名,并最终赢得五项奥斯卡大奖(最佳影片、最佳导演、最佳摄影、最佳音响、最佳化妆),这一年成为梅尔.吉布森的黄金之年。 梅尔.吉布森生于1956年1月3日,在纽约长大的吉布森从小就对电影产生了巨大浓厚的兴趣。 1968年他随家庭迁至澳大利亚居住,并且在悉尼学习专业表演技术。随后进入影坛,令他一举成名的是著名导演乔治.米勒的科幻片《疯狂至极》(《MadMax》1979),他还主演了米勒导演的另一部影片《Tim》(1979),《公路战士》(《TheRoadWarrior》1981)以及《疯狂至极》的续集(《MadMaxBeyondThunderdown》1985)。此外他还受到另一位澳大利亚新浪潮导演彼得.维尔的青睐,主演了《Galiipoli》(1981)和《生存在危险中的一年》(《TheYearOfLivingDeagerously》1983)。在这些影片中,吉布森的演技不断得到提高,变得娴熟自如,灵活自然。 1984年他来到好莱坞,拍摄了一些影片象《河》(《TheRiver》1984)、《奖金》(《ThePointy》1984),但都反应平平。这些影片并不适合他,直到1987年理查德.唐纳找到了吉布森,让他主演了《致命武器》(《LethalWeapon》),饰演影片中幽默诙谐、勇敢坚强、坚持正义,与邪恶势力顽强斗争的警探里格斯。这一角色是成熟的吉布森的出色奉献,从此他做为一个完美的动作明星向好莱坞的巨星地位迈进。《致命武器》取得了巨大成功,它的第二第三集也随即推出。吉布森也因此取得了巨大声誉,他创办了他自己的制片公司LCONRrcductions。在拍摄三部《致命武器》的同时,他还参加拍摄了不少的影片。如《德奎拉日出》(《TequilaSunrise》)。这其中属于他的制片公司出品的就有《哈姆雷特》(《Hamlet》1990)和《永远年轻》(《ForeverYoung》1992)。 在主演了大量影片,并作过制片人之后,吉布森开始准备做一个导演“演而优则导”在影视界很常见,克林特·伊斯特伍德,凯文.科斯特纳,朱迪.福斯特都在这方面取得了巨大成功。吉布森对此已是早有准备,作为演员他有丰富的表演经验,作为制片人他也熟悉后台幕后工作,而且与三个著名导演的紧密合作,互相切磋也使他对导演的工作相当熟悉了解,他再从事导演工作可以说是轻车熟路,事半功倍。1993年他执导了影片《无脸人》(《TheManWithoutFace》),讲述了一个古代传奇故事,并且亲自主演;1994年他又还主演了影片《赌侠马华利》(《MAVERICK》)饰演了一个西部枪手,赌徒的形象。 在积累了大量经验后,吉布森投入全部精力制作、导演并主演《勇敢的心》。这是一部充满了激情、政治、浪漫、道德的古装史诗巨片,对任何一个导演来说都是一个空前的挑战和考验。吉布森表现出非凡的能力,成功地推出了这样一部具有深刻民族主义和政治内涵的影片,他当之无愧被称为世界巨星。
2023-07-12 16:11:272

英文感谢信

  随着个人的素质不断提高,越来越多人会去使用感谢信,在写作上,感谢信有一定的书写规范。如何写出一个充满真情实感的感谢信?以下是我为大家收集的英文感谢信9篇,希望能够帮助到大家。 英文感谢信 篇1   Considering my poor English foundation and weak communication skills, I had never thought that I could finish this project! I had always struggled in writing a proper report even in 500 words before I had a tutor like Mr. Minggui Qu. But now I can finish a project and I can"t believe this could be true!   Mr. Qu, my tutor, words could never express my thanks to him. From grammar, writing style, format and research skills to marketing theories, he has taught me everything and he has been always so patient to me whenever he revises my reports including my massive grammar mistakes. He has been encouraging me all the time. Though my report still contains lots of problem, I have already learned a lot from this project just because of his help. I am really grateful to him.   Meanwhile, I would like to express my gratitude towards my parents and staff member of Yong Fei Machinery company for their kind co-operation and encouragement which help me in completion of this project. I would like to express my special gratitude and thanks to industry workers for giving me such attention and time. My thanks and appreciations also go to my class teacher Mr Hong for looking after me in many ways and people who have willingly helped me out with their abilities. 英文感谢信 篇2   Dear Jack and Jane,   I hope this letter finds you well. I"m just writing to thank you both for the holiday and for the photos you sent.   The photos arrived this morning in the post. They reminded me what a great time I had during my stay with you last month. You really were fantastic hosts, and I couldn"t have asked for better guides to show me around.   Sorry I didn"t write to you earlier, but I"ve been working flat out since the moment I arrived home. Do you remember I told you I had an assignment to finish? Well, the deadline was two weeks earlier than I thought it was!   Anyway, I"m back to normal now and I"ve handed in all of my assignments. In fact, now that I"m free, why don"t you both come and stay? There"s a spare room here, so you"re welcome to use it whenever you like.   Hope to see you soon,   Devin 英文感谢信 篇3   dear mr.wang,   i am writing to express my heartfelt gratitude. i am referring to that unfortunate accident the other day, when i was knocked off my bike by a taxi.if it had not been for your timely assistance in giving me first aid, i fear that the consequences might have been much serious. everyone agrees that it was your quick-witted response in that emergency that has led to this satisfactory outcome.   although nowadays people in mounting numbers talk about the need to be unselfish, we see very few people practice what they preach. if there were more people like you, the world would be a nicer place.   yours sincerely,   li ming 英文感谢信 篇4   Dear Ms. Grasso:   Thank you for interviewing me at Credit Technologies. I was impressed with the company and the type of banking services the corporation provides. Your comments gave me a good understanding of the business and your expectations for the attorney you are seeking. I am confident that my background and experience in banking law and my ability to analyze statutes and regulations in detail could be useful to Credit Technologies. If you were to offer me this position, I believe that I could provide services that would meet the high standards of your corporation.   I look forward to talking again with you soon.   Faithfully yours,   Tom 英文感谢信 篇5   XX leadership:   Hello!   In the company for more than three years, I have engaged in a variety of work, accumulated some practical experience. At the same time, the use of the job to read the Chinese university of economic management of part-time MBA learning professional managers, and smoothly through the school exam and mentor"s approval, and achieved the international professional manager certificate of registration and graduate degrees, at the same time of self learning management guru Dr Yu and well-known school of management courses and a lot of related enterprise strategy development, business management, marketing strategy, talent incentive such as video and text information, to have a preliminary understanding of enterprise management. Through the study, found that success is not as difficult as I thought: the correct target + detailed plans, tenacious will = success; Everyone can success; Enterprise and so on. Also because of learning, let me get the knowledge, increased confidence, not only I like quality management industry, and gradually clear the vocational ideal, strive to become experts in the field of quality management.   Win by DE. I am a firm believer of moral theory of success, but it doesn"t reject the personality theory. So, I in the good faith as its core values at the same time, also attaches great importance to develop proactive attitude and maintain good interpersonal relations of mellow skills.   Makes difficult to garland. In the study work life of the past, I get along well with others, unity and cooperation, in the cultivated my good team cooperation spirit, at the same time, also exercise their own management, communication and coordination ability. I am eager to meet new challenges, I hope I can manage the whole quality management department, the development direction of this work is very suitable for me and interest.   Indeed, in the changing of today"s society, in the increasingly fierce talent competition, I still lack a lot, but I believe, if lucky enough to get the trust of the company all my colleagues and guidance, modesty and eagerness to learn, pragmatic progress, the pursuit of excellence and tenacious character and fighting spirit, I will, under the guidance of you in rich practice constantly improve, gradually perfect. At the same time, I will use up all I can give my wit, led to repay him. 英文感谢信 篇6   尊敬的各位同仁:   20xx年是一个充满机遇和挑战的一年,感谢有你和我们在一起风雨同舟。   去年10月份至今,为了完成南城、虎门、恩平三家工厂的搬迁合并和车间改造升级,在高强度的产能压力下,我们的同事响应公司号召加班加点,甚至牺牲了自己的周末时间来完成产量,在这过去的6个月里我们的同事工作得很辛苦,很累。   但今天,我们有理由自豪,通过我们的.努力,艰苦的付出,我们顺利的完成了3月份的产量目标100%。工厂搬迁合并没有难住我们,车间改造升级没有难住我们,客户超额增产波动也没有吓倒我们。   今天,我们有理由自豪,南城、虎门、恩平三家工厂已经顺利合并,并成功调试生产正常。我们在原有人数不变的情况下,超额的完成客户的产量需求。   正是因为你和我们在一起努力付出,才有今天的成就。让我们继续努力,共同迎接挑战,待到生产高峰期过后,我们再一起相聚庆功。   谢谢大家!   Dear all,   Y20xxis a year full of opportunities and challenges. Thanks   you so much for being with us, Stand together through storm and stress.   Since October last year, in order to move and combine three facilities: Nancheng, Humen, Enping, and reform the workshop, under high capacity pressure, our employee answered the call to working hard and OT , Even sacrificed their weekend time to Complete output. They worked hard and tired in last 6 months.   But today, You can be justly proud of your achievement. For your efforts and hard work, We successfully completed the production target of 100% in March. Three facilities move and combine did not daunt us; workshop reform and upgrading did not daunt us; Customer Increased production or production swings did not daunt us.   Today, we can be justly proud of . Three facilities have been successfully combined and worked correctly, we finished the capacity in same HC.   Thanks for you Stand together with us and get today"s achievement. Let   us continued to work hard, co-operate closely to meet the challenges. After the production peak, we celebrate together. 英文感谢信 篇7 Dear mother:   Hello   Thank you for letting me come to this world and thank you for your kindness to me for twelve years. For years you don"t know how much effort you have paid for me. You have made a relaxed and pleasant learning environment for me in your study and life, and care and care for me. Today writing to take this opportunity, especially for you - my mother stay together morning and night to write a letter to express my gratitude to you.   In the study, the general parents only pay attention to the knowledge of the children, and you give me a key to learning knowledge. You teach me to learn four to - heart is thought to be specific, not to is to put the eyes of two minds; see; is the mouth to read carefully read the speech to say, don"t be shy; hand to is to often take notes, because "forget it." Your methods of learning have benefited me for a lifetime.   You not only care about my study, but also pay more attention to teaching me the truth of being a person. When I was young, I took a few dollars in your wallet money secretly, snacks to eat, your results are found, I think you can beat me, but who knows your sincere words and earnest wishes to me: "you will never do that, without permission to take others" things, such behavior called the" stolen ", but" I understand "hours steal needles up to steal gold". Because of the age, I do not understand, you will explain patiently, "how small a needle is stolen!" But once the habit is formed, the courage is getting bigger and bigger, so that the police will catch you when they grow up. " I realized that it was terrible to steal. My mother told me the simple truth, but deeply engraved in my young heart. Mom, is your education I become a great man.   Mother, in the process of growth, every point of progress, every point of my achievements, all of your heart, is how you teach me how to learn and how to be a person. You can rest assured that I will be a useful person to live up to your expectations of me.   I wish you:   The work is smooth and smooth sailing.   Your daughter: Li Weixuan   July 23rd 20xx 英文感谢信 篇8   Respected xx of xx Greetings, I am writing this letter to thank you for your kind understanding of our moderate adjustments to our pricing policies. As you may have already known, the cost of the raw materials necessary to our production has moved up greatly in the last few years, and considering the fact that it is to the interests of both of our companies" that we maintain a cooperation relationship, we have been by far trying to supprethe rise of product prices as best we can. But with the recent increase of labor cost, it has become impossible for us to leave prices the way they were, and thus the new pricing policy. You have shown great understanding when we announced our new price list, and that is certain to help increase our future cooperation, once again you have my thanks on behalf of the whole company. You are very welcome to continue ordering our products, we look forward to in depth cooperation between our two companies. 英文感谢信 篇9   Dear Jim,   I am writing to express my heartfelt gratitude. I am referring to that unfortunate accident the other day, when I was knocked off my bike by a taxi.   If it had not been for your timely assistance in giving me first aid, I fear that the Consequences might have been much more serious. Everyone agrees that it was your quick-witted response in that emergency that has led to this satisfactory outcome.   Although nowadays people in mounting numbers talk about the need to be unselfish, we see very few people practice what they preach. If there were more people like you, this world would be a much nicer place.   Yours sincerely,   Li Ming
2023-07-12 16:11:221