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In 1890 there were many American cities and towns w

2023-08-22 08:52:20
共4条回复
LocCloud

C. other than

解释:

在1890,有许多美国城市和城镇的学校,在一天的教课期间里,应用英文(___)的语言为沟通语言。

more than = 多余,多过

except = 除外,除了

other than = 以外,

except for = 而且, 加之

希望有帮助。加油!

LuckySXyd

选C other than 翻译下来为:在1890年,许多美国城市和乡镇的学校部分的日常指示是用非英语语言发布的。more than =only

余辉

A 为正解 。

大鱼炖火锅

A

more than 不仅仅.

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D.Where there are no written records.there is no history.   42.We know very little about the central Africa 200 years ago because   A.there was nothing worth being written down at that time   B .the people there ignored the importance of keeping a record   C.the written records were perhaps destroyed by a fire   D.the people there did not know how to write   43.“Remembered history”refers to   A.history based on a personu201fs imagination   B .stories of important happenings passed down from mouth to mouth   C .songs and dances about the most important events   D .both B and C   44.“Remembered history”is regarded as valuable only when   A. it is written down   B .no written account is available   C.it proves to be time   D.people are interested in it   45 .The passage suggests that we could have learned much more about our past than we do now if the ancient people had   A.kept a written record of every past event   B. not burnt their written records in wars   C.told exact stories of the most important happenings   D.made more songs and dances   答案:DDDBA   land produces   Although the United States covers so much land and the land produces far more food than the present population needs,its people are by now almost entirely an urban society Less than a tenth of the people are engaged in agriculture and forestry(林业),and most of the rest live in or around towns,small and large.Here the traditional picture is changing:every small town may still be very like other small towns,and the typical small town may represent a widely accepted view of the country,but most Americans do not live in small towns any more.Half the population now lives in some thirty metropolitan areas(1arge cities with their suburbs、of more than a million people each—a larger proportion than in Germany or England,let alone France.The statistics(统计)of urban and rural population should be treated with caution because so many people who live in areas classified as rural travel by car to work in a nearby town each day.As the rush to live out of town continues.rural areas within reach of towns are gradually filled with houses,so that it is hard to say at what moment a piece of country becomes a suburb But more and more the typical American lives in a metropolitan rather than a small town environment.   36.If now America has 250 million people.how many of them are engaged in agriculture and forestry?   A.About 25 million.   B.More than 25 million.   C.Less than 25 million.   D. Less than 225 million   37.Which of the following four countries has the smallest proportion of people living in metropolitan areas?   A.United States.   B.Germany.   C.France.   D.England.   38.Whatu2019s the meaning of the word“metropolitan”in the middle of the passage?   A .Of a large city with its suburbs.   B.Of small and large towns.   C.Of urban areas.   D.Of rural areas.   39.According to the passage,what can we learn about small towns in the United States?   A Most small towns become gradually crowded   B.Small towns are still similar to each other.   C.As the traditional picture is changing,towns are different.   D .Small towns are turning into large cities   40.Why is it hard to say when a piece of country becomes a suburb?   A.Because they are the same.   B.Because the rush takes place too quickly   C.Because the process is gradual.   D.Because more and more Americans live in metropolitan   答案:CCABC   president   There are stories about two U.S . presidents,Andrew Jackson and Martin Van Buren,which attempt to explain the American English term OK.We donu201ft know if either story is true,but they are both interesting. The first explanation is based on the fact that President Jackson had very little education.In fact,he had difficulty reading and writing.When important papers came to Jackson,he tried to read them and then had his assistants explain what they said.If he approved of a paper.he would write“all correct”on it.The problem was that he didnu201ft know how to spell.So what he really wrote was“ol korekt”.After a while,he shortened that term to“OK”.   The second explanation is based on the place where President Van Buren was born,Kinderhook,New York.Van Bnrenu201fs friends organized a club to help him become President They caned the club the Old Kinderhook Club,and anyone who supported Van Buren was called“OK”.   31.The author   A. believes both of the stories   B.doesnu201ft believe a word of the stories   C is not sure whether the stories are true   D. is telling the stories just for fun   32. According to the passage,President Jackson   A.couldnu201ft draw up any documents at all   B. didnu201ft like to read important papers by himself   C.often had his assistants sign documents for him   D .wasnu201ft good at reading,writing or spelling   33.According to the first story, the term “OK”   A. was approved of by President Jackson   B.was the title of some Official documents   C.was first used by President Jackson   D.was an old way to spell“all correctu2019u2019   34 .According to the second story,the termu2018u2018OK”   A.was the short way to sayu2018u2018old Kinderhook Club”   B.meant the place where President Van Buren was born   C.was the name of Van Burenu201fs club   D.was used to call Van Burenu201fs supporters in the election   35.According to the second story.the term“OK”was first used   A.by Van Buren   B.in a presidential election   C.to organize the Old Kinderhook Club   D.by the members of theu2018u2018Old Kinderhook Club”   答案:CDCDB ;
2023-08-13 07:09:321

江南水乡的标准英语是The south of the lower reaches of the Y

a southren watery region 其实都大同小异,主要看上下文来替换了
2023-08-13 07:09:484

Beldon and Canfield are two seashore towns, not far apart. Both towns have many hotels. And in the

1u3001C 2u3001B 3u3001A 4u3001C
2023-08-13 07:10:092

武汉的英文介绍

Wuhan, composed of the three towns of Wuchang, Hankou, and Hanyang, is the capital of Hubei Province. The three towns, separated by the Yangtze and Hanshui rivers,a re linked by bridges, and because these municipalities are so closely connected by waterways, Wuhan is also called the "city on rivers." Being the largest inland port on the middle reaches of the Yangtze River and a major stop on the Beijing-Guangzhou Railway, Wuhan is one of China‘s most important hubs of water and rail transportation and communications. Wuhan has an old history and rich cultural traditions. It began to prosper as a commercial town about two thousand years ago, when it was called Yingwuzhou (Parrot beach). From the first century to the beginning of the third century, the towns of Hanyang and Wuchang began to take shape. During the Song Dynasty (960-1279), the area became one of the most prosperous commercial centers along the Yangtze River. By the end of the Ming Dynasty (1368-1644), Hankou had become one of the four most famous cities in China. Today, Wuhan is the political, economic, and cultural center of Central China. It boasts of one of China‘s leading iron and steel complexes -- the Wuhan Iron and Steel Corporation. Wuhan is also a city with a strong revolutionary tradition. 武汉,是由三个城镇的武昌,汉口,汉阳组成,武汉是湖北省的省会。这三个城镇,长江和汉水的河流将三镇分开,并用桥梁连接起来,因为这些城市四处环湖,所以武汉也被称为“湖中之城。 ”作为世界上最大的内陆港口上中游和长江流域主要的京广铁路在此通过,武汉是中国最重要的枢纽供水和铁路运输和通讯等方面。 武汉有悠久历史和丰富的文化传统。它开始作为一个繁荣的商业城约二千年前,当它被称为Yingwuzhou (鹦鹉海滩) 。武汉最开始由汉阳和武昌区组成。在宋代( 960-1279 ) ,成为该地区最繁荣的商业中心,沿长江。到了明代( 1368年至1644年) ,汉口已成为中国4大城市之一。今天,武汉是中国政治,经济,文化中心。武汉拥有全国优秀钢铁企业-武汉钢铁公司。武汉也是一个革命传统的城市。
2023-08-13 07:10:171

沙漠英语

沙漠英语desert。n.(名词):沙漠,荒漠,荒野,荒凉的境地,不毛之地,荒地,荒原;功过,赏罚,功罪,功劳,惩罚;该受奖赏的品质,美德;应得的报酬、奖赏或惩罚;枯燥无味的学科;历史上的荒芜时代。v.(动词):遗弃,抛弃,离弃,丢弃,舍弃,背弃,丢开,扔掉,不管,背离,撇下(不管);(从...)开小差;擅离(职守、部队);逃跑,逃走,逃亡,当逃兵;废弃,放弃;使(某人)失望。adj.(形容词):沙漠的,荒漠的,荒凉的,荒芜的,不毛的,无人的,荒无人烟的,无人居住的。词汇搭配:barren desert荒凉的不毛之地、cultural desert文化沙漠、trackless desert人迹罕至的沙漠、arid desert干旱的沙漠、entertainment desert一个缺乏文化娱乐、desert a cause背弃某种事、desert a doctrine背离某种学说。desert an institution离开某机构、desert campaign pledges背弃竞选的保证、desert one"s colours变节、desert one"s family遗弃家庭。有关desert的句子:1、Frank Mariano negotiates the desert terrain in his battered pickup.(弗兰克·马里亚诺驾驶他那辆破旧的敞篷小货车成功地穿越了沙漠地区。)2、The remote desert area is accessible only by helicopter.(只有乘直升机才能进入那遥远的荒漠地区。)3、No one agrees on what counts as a desert.(没有人对于什么可以看作是荒漠有共识。)4、To add verisimilitude,the stage is covered with sand for the desert scenes.(为了更加逼真,舞台上铺满了沙子作为沙漠的场景。)5、Essentially it was part of a vast desert.(本质上它是广阔沙漠的一部分。)6、The diamond towns are gradually being reclaimed by the desert.(那些开采钻石的小镇逐渐被沙漠重新吞噬了。)7、Somalia is mostly desert.(索马里大部分地区都是荒漠。)8、The Sahara is a sandy desert with great sand hills.(撒哈拉沙漠是一个沙质沙漠,有很多沙丘。)9、We traverse the desert by truck.(我们乘卡车横穿沙漠。)10、He wants to use the water to irrigate barren desert land.(他想用该水来灌溉贫瘠的沙漠土地。)
2023-08-13 07:10:251

求景德镇的英语介绍300字左右,谢谢。

Jingdezhen City, alias "porcelain", for the city of Jiangxi province. Located in the northeast of Jiangxi Province, which belongs to the transition zone of Mount Huangshan, and the Poyang Lake plain Huaiyu mountains. In Anhui (Anhui), Zhejiang (Zhejiang) and GaN (Jiangxi) at the junction of three provinces, is one of Anhui, Zhejiang and Jiangxi an important transportation hub.Jingdezhen ceramic famous all over the world, is the history of the kiln. During the period of the Republic of Hubei, Hankou and Guangdong had Foshan, and that of the four Henan Zhuxian town.Jingdezhen City, under the jurisdiction of Leping City, Fuliang County, Zhushan District, Changjiang district and Jingdezhen city high tech development zone. There are 13 streets, 39 towns, 3 state-owned forestry, animal husbandry and fishery, 131 community committees, 502 village committees. The city"s land area of 5270 square kilometers, with a total population of about 170 million, including non agricultural population of 70.6 million people, State Council released the first batch of 24 historical and cultural city and one of the national Class-A open area. Jiangxi is representative of Jingdezhen dialect, mostly Han Jiang Youmin.Jingdezhen is a tourist city in Jiangxi province and industry, an important world of porcelain, the cradle of China helicopter industry. China is the State Council released the first batch of one of the 24 national historical and cultural city and a national open area.Jingdezhen to obtain "China"s outstanding tourist city, the National Ecological Garden City, the national civilized city, Jiangxi province to create a civilized city work advanced city" and so on.
2023-08-13 07:12:111

急~这句英语有语法问题吗?

没有什么问题,你的翻译是什么
2023-08-13 07:12:484

武汉旅游景点中英介绍 武汉景点英文介绍中英文对照

关于武汉的旅游景点介绍 (中英对照)武汉的旅游景点?`解放公园 磨山 森林公园 归元寺 黄鹤楼 琴台 东湖 汉阳动物园 等等``你把我说的地名放到百度一搜就有详细介绍了``还有些地方是玩 购物的 你没问 我就不多说了``一篇介绍武汉的英文小短文,要有中文翻译Located in the middle of China ,Wuhan is a good place for tourists.It is a pleasant city with beautiful lakes,many parks and modern malls which are worth visiting.They all are waiting for you.武汉位于中国中部,对游客来说它是一个宜人的城市。有美丽的湖泊,许多公园和现代化的购物中心可供参观,欢迎各位前来游玩。怎样学好英语,写出一篇漂亮的作文?逻辑第一,搭配第二,实在是写不来就去翻翻课本看范文,点击下方蓝字链接,免费欧美外教教你如何写作:【免费领取,外教一对一精品课程】口音纯正的外教老师和中教老师进行作文技巧辅导!阿卡索外教线上学习,课均不到20元,有证的专业外教一对一上课指导,还有助教课后辅导,为大家提供更好地学习环境。不知道如何选择英语机构,可以百度咨询“阿卡索vivi老师”;如果想下载免费英语资源,可以百度搜索“阿卡索官网论坛”。写一篇 向别人推荐武汉的旅游景点的英语作文 不少于100词Wuhan, composed of the three towns of Wuchang, Hankou, and Hanyang, is the capital of Hubei Province. The three towns, separated by the Yangtze and Hanshui rivers,a re linked by bridges, and because these municipalities are so closely connected by waterways, Wuhan is also called the "city on rivers." Being the largest inland port on the middle reaches of the Yangtze River and a major stop on the Beijing-Guangzhou Railway, Wuhan is one of China‘s most important hubs of water and rail transportation and communications. Wuhan has an old history and rich cultural traditions. It began to prosper as a commercial town about two thousand years ago, when it was called Yingwuzhou (Parrot beach). From the first century to the beginning of the third century, the towns of Hanyang and Wuchang began to take shape. During the Song Dynasty (960-1279), the area became one of the most prosperous commercial centers along the Yangtze River. By the end of the Ming Dynasty (1368-1644), Hankou had become one of the four most famous cities in China. Today, Wuhan is the political, economic, and cultural center of Central China. It boasts of one of China‘s leading iron and steel complexes -- the Wuhan Iron and Steel Corporation. Wuhan is also a city with a strong revolutionary tradition.
2023-08-13 07:13:021

2018的英文是什么?

Two thousand and eighteen
2023-08-13 07:13:133

齿轮油泵十 大品牌排 行榜?

1. 上海阳光泵业制造有限公司上海阳光泵业制造有限公司是国内一家著名的集研制、开发、生产、销售、服务于一体的水泵大型多元化企业, 是国内久负盛名的生产水泵企业之一。同样也被斯坦福、马拉松、凯捷利等知名电机生产供应商认定为高信誉合作伙伴。先进的研发与设计及规模性生产,使得瑞营可以满足所有行业的应急用电需求。“服务到永远”、“为您解决电力供应不足问题”是我们永久的企业理念。 2.山东神力渣浆泵科技有限公司山东神力渣浆泵科技有限公司(原山东博山渣浆泵厂)地处风景秀丽的“中国泵业名城”——淄博市博山区,始建于1968年,是国内最早的专业渣浆泵生产企业。主导产品为“神力”牌渣浆泵、液下渣浆泵、潜水渣浆泵、真空泵、抽芯机系列和“鲁魁牌”水煤气发生炉系列。经过四十多年的发展,目前公司已发展成长为占地面积9.7万平方米,厂房面积4.3万平方米,下设三个现代化生产厂区、一个技术研发中心,集科研、开发、生产、销售于一体的企业。3. 河北天泽水泵有限公司河北天泽水泵有限公司是国家机电部水泵定点生产厂家,也是华北工业水泵主要生产厂家之一。具有几十年设计、制造的丰富经验,产品质量稳定,性能可靠,畅销国内外。天泽水泵 先后取得了河北省优质产品、名牌产品、优秀生产厂家等荣誉称号,并率先于1999年通过了ISO9001国际质量体系认证,为公司的生产,发展奠定了坚实的基础。 河北天泽水泵是集设计、开发、制造、销售、服务于一体,主营:多级泵及配件、管道泵、热水泵、排污泵、化工泵、渣浆泵、耐腐蚀、不锈钢泵、管道泵、化工泵、纸浆泵、离心泵、清水泵、液下泵、污水泵等20个系列64个品种1100多个规格型号的各类水泵,年产万余台,产品广泛应用于化工、稀土、农药、石油、电镀、冶炼、电子等领域, 大批产品替代进口,畅销全国31个省市和自治区,并在全国建立了26个分支结构,巩固了健全的销售服务网络。4. 济南泉祥水泵设备有限公司 xylem赛莱默水泵,鹤见水泵,flygt飞力水泵,lowara不锈钢泵是广州科澍环保设备有限公司的主营水泵品牌,水泵产品种类多,型号丰富,价格空间广阔,售后无忧,同时为xylem赛莱默水泵,鹤见水泵做售后服务,水泵维修,检修,零配件更换等。5. 郑州金元冶金设备有限公司郑州金元冶金设备有限公司是一家集科研、工贸为一体的股份制企业,它坐落在中国著名铝都—郑州市上街区南一公里处的南郊段,南依嵩山,北邻黄河,西有古都洛阳,东有宋都开封,开落高速公路和国道310都从这里经过,环境优美,地理位置得天独厚。公司注册资本为100万人民币。公司主营业务为:渣浆泵,泥浆泵,砂浆泵,污水泵,灰浆泵等杂质泵的研发,生产与销售。  自 2003年 5月创办以来,我们本着诚信经营的原则,积极进取,勇于开拓,经过多年的努力拼搏,完成年产值约1500 万元。 LZB、LZ2H系列杂质泵是我公司采用两相流理论开发的新一代高效 节能耐磨杂质泵,适用于输送所含固体颗粒的物料浆体。固液混合浆体的最大重量浓度为:灰浆(煤浆)40%,矿浆(重介)60%,根据工矿可串联使用。6.上海石保水泵制造有限公司上海石保水泵制造有限公司是国家机电部指定的水泵生产厂家,也是华东工业水泵厂家之一。我公司是专业生产工业水泵的企业,已有多年的水泵生产历史。我公司具有十几年设计、制造的丰富经验,产品质量稳定,性能可靠,畅销国内外。上海石保水泵制造有限公司主要生产的水泵产品有压滤机专用泵,渣浆泵,FSB氟塑料化工泵,多级泵,纸浆泵,污水泵,清水泵,水泵配件,机械密封等十多个系列,上百种规格型号。上海石保水泵制造有限公司现有职工50余人,其中10%是工程技术人员。产品的开发设计和工艺编制全部采用CAD新技术。我公司建有国内大型的测试精度达到ISO3555级精度的渣浆泵站,主要研究泵的运行性能机械损耗、抗磨蚀材料及新产品的开发。拥有严格的质量控制体系,在各个车间设有质量检查站,在关键的流程设有专人负责监查控制。7. 河北宏强泵业有限公司河北宏强泵业有限公司是国家生产工业水泵的专业性企业,公司有多年的生产经验,良好的管理体系和质量保证体系,公司现有员工500余人,高,中级专业人员70余人,拥有各种生产设备100余台,固定资产2800万元,厂区面积3.7万平方米,建筑面积2.5万平方米。 我公司拥有雄厚的生产技术力量,完善的生产保障、质量保证监督体系和专业型精神队伍。公司年生产水泵1万余台(套),各种配件1500多吨,是科研、生产、经营为一体的生产实体。 宏强主要生产:D、DA卧式多级离心泵,S、SH双吸泵,LXL纸浆泵,AH、HH、ZJ渣浆泵,ZJL、SP、FY液下渣浆泵,PNJB衬胶泵,PN、PNL泥浆泵、YW液下泵,PW、PWL污水泵,DL、LG立式多级离心泵,GC、DG多级锅炉给水泵,ISZ、ISG管道泵直连泵,IS、B、BA清水泵,IH、AFB化工泵,NWL、WDL、WGL立式污水泵,Y、AY离心油泵等各类水泵及配件. 8. 永嘉县慧泉泵业制造有限公司永嘉县慧泉泵业制造有限公司是一家国内专业从事多级泵,集研究、开发、销售为一体的现代化企业。拥有一批高素质、具有丰富经验专业技术、管理团队人员。本公司采用世界先进的CFD流体力学专业内流畅分析软件CAE有限元分析、并辅以PROE和CIMATRON等三维软件设计,经过多道特殊设备加工和成品检测,研制了轰动全国的冲压不锈钢多级泵QDL、QDLF、CDLF等系列产品。现在公司研制的新一代HQDL便拆式轻型不锈钢多级离心泵,配置了专利产品HQ-12、HQ-18免维护集装式机械密封,其在锅炉冷热水循环、高层建筑供水消防、工业水处理、石油化工等各行业中广泛使用,其寿命、效率能源等各项指标都达到或超过国际水平。 9.开宇泵业本厂主要产品有:QW系列潜水排污泵、QSZ潜水渣浆泵、JYQW自动搅匀排污泵、JGQW切割型排污泵、GAK系列自动耦合装置、IS、ISG、DL、DA1、D、SH、LG等系列单极、多级离心式清水泵、XBD系列消防泵等各种水泵及渣浆泵、真空泵、给水设备。 产品工艺先进、性能可靠、质量优良,水泵性能均达到国际标准B级精度。10. 石家庄市新亚水泵制造有限公司石家庄市新亚水泵制造有限公司是泵类产品的专业制造厂商,拥有近二十年的研发、生产、销售各种潜水电泵的经验。产品采用德国里茨公司的技术,设计先进,效率高、耗电低,尤其产品的质量极为稳定,各方面性能在业内均处于领先地位。近二十年来,我公司的产品以畅销全国三十多个省市地区,并可根据用户需求定做特殊型号产品,深受用户好评。我公司主要生产工矿产品系列200JQA80、250JQA80、250JQC140;里茨技术6699、6613、6618、6620、6715。QJ系列:100QJ、125QJ、150QJ、175QJ、200QJ、250QJ、300QJ、350QJ。流量:由5m3/h-1000m3/h,扬程:5-1000m以下潜水电泵,广泛用于农田灌溉、城市供水和工矿企业用水,是提取地下深井、河流水和水库水的理想工具。
2023-08-13 07:12:341

ShaunDelaney是哪里人

ShaunDelaneyShaunDelaney是一名电影演员,代表作品有《第五指令》、《传奇海盗黑胡子船长》等。外文名:ShaunDelaney职业:演员代表作品:《第五指令》合作人物:杰西·约翰逊
2023-08-13 07:12:341

2013数学建模B怎么做

附上做好的图
2023-08-13 07:12:342

闺蜜刻字刻什么英文

闺蜜的英文字母
2023-08-13 07:12:354

wkl 是什么意思 和炎亚纶有关的

台湾是注音,没有g,亚纶哥哥的名字在注音里是wkl
2023-08-13 07:12:423

闺蜜留言短句英文

1.写给闺蜜的祝福语用英语 一个人总要走陌生的路,看陌生的风景,听陌生的歌,然后在某个不经意的瞬间,你会发现,原本是费尽心机想要忘记的事情真的就那么忘记了。 1.One is always on a strange road, watching strange scenery and listeningto strange music. Then one day, you will find that the things you tryhard to forget are already gone. 2.幸福,不是长生不老,不是大鱼大肉,不是权倾朝野。幸福是每一个微小的生活愿望达成。 当你想吃的时候有得吃,想被爱的时候有人来爱你。 2.Happiness is not about being immortal nor having food or rights inone"s hand. It"s about having each tiny wish come true, or havingsomething to eat when you are hungry or having someone"s love when youneed love. 3.爱情是灯,友情是影子,当灯灭了,你会发现你的周围都是影子。 朋友,是在最后可以给你力量的人。 3.Love is a lamp, while friendship is the shadow. When the lamp is off,you will find the shadow everywhere. Friend is who can give youstrength at last. 4.我爱你不是因为你是谁,而是我在你面前可以是谁。 4.I love you not for who you are, but for who I am before you. 5.爱情,要么让人成熟,要么让人堕落。 5.Love makes man grow up or sink down. 6.举得起放得下的叫举重,举得起放不下的叫负重。 可惜,大多数人的爱情,都是负重的。 6.If you can hold something up and put it down, it is calledweight-lifting; if you can hold something up but can never put it down,it"s called burden-bearing. Pitifully, most of people are bearing heavyburdens when they are in love. 7.我们每个人都生活在各自的过去中,人们会用一分钟的时间去认识一个人,用一小时的时间去喜欢一个人,再用一天的时间去爱上一个人,到最后呢,却要用一辈子的时间去忘记一个人。 7.We all live in the past. We take a minute to know someone, one hour tolike someone, and one day to love someone, but the whole life to forgetsomeone. 8.一个人一生可以爱上很多的人,等你获得真正属于你的幸福之后,你就会明白一起的伤痛其实是一种财富,它让你学会更好地去把握和珍惜你爱的人。 8.One may fall in love with many people during the lifetime. When youfinally get your own happiness, you will understand the previoussadness is kind of treasure, which makes you better to hold and cherishthe people you love. 闺蜜:bff=best friend forever.。 2.英语作文 给好朋友的留言 带翻译 英语作文 给好朋友的留言 As time goes by.We have been classmate and friend for 3 years. In the past three years. We enjoyed ourselves life . At school. We played and we had class. We did homework after school. Sometimes. We were angry. but it doesn"t influence our friendship. 3.有适合在朋友空间里留言的英语佳句推荐给我吗 文艺一些的 If you are, I will not need to heaven 【如果有你在,我将不需要天堂】 一路上有你们 陪我犯错 这份真挚的友谊 我会一辈子珍惜 一路上有你们 陪我被罚 这份真挚的友谊 我会一辈子珍惜 一路上有你们 陪我发疯 这份真挚的友谊 我会一辈子珍惜 Along the way, have you accompany me to the sincere friendship I will cherish a lifetime Along the way, have you accompany me to be sent the sincere friendship I will cherish a lifetime Along the way, have you accompany me mad the sincere friendship I will cherish a lifetime on1y,不是每个人我都会叫她亲爱 on1y,不是每个人我都会叫她宝贝 on1y,不是每个人我都会叫她挚爱 on1y,不是每个人我都会叫她唯爱 On1y, not everyone I will call her dear On1y, not everyone I will call her baby On1y, not everyone I will call her love On1y, not everyone I will call her love 4.毕业了,想用英语给闺蜜留言 No matter how far away we are drift, time will always remind us our friendships and memories being together - 无论我们飘离彼此多远,时间都会提醒我们之间的回忆和友谊。 It is sad that we are graduating, yet you will always know that I"m always here for you - 非常伤心我们即将毕业,但是你要一直记住我永远都会在这里陪伴你。(大概这个意思) We might be going seperate different directions, but I want you to know I will always support you and be there for you when you need me - 我们可能会往不同的方向走,但是我想要你知道我会永远的支持你,我也会在这里陪伴着你。 就这么多了,都是我想出来的。如果还要就和我说。祝你和你朋友毕业愉快~!
2023-08-13 07:12:421

断路器和空开的区别

断路器和空开的区别如下:1、控制形式不同空气开关在线路发生短路情况才会断开;漏电保护器则是有人不小心碰触到线路发生触电行为才会断开。2、断电原理不同空气开关是通过判断回路电流是否过载而断开;漏电保护器则是当人体接触火线时候,人体与火线形成“人”“火”“地”的状态,此时只有火线有电流,则电磁产生磁力,将开关断开。3、保护级别不同空气开关是过电保护,所以属于安级,而漏电保护器则属于毫安级,因需要及时的切断电源,防止有人触电,所以级别相对空气开关高。4、保护对象不同空气开关——保护设备的,空气开关主要是监测线路的电流大小,如果超过它的设定值就会跳开切断电路。不管这个大电流是因为电器功率过大还是发生了触电或者绝缘损坏所导致,它都会跳开。比如图中的空气开关设定值就是32A,当超过这个电流就会跳闸,而电路中小于这个电流是不会跳闸的。一般空气开关也装在配电箱中,作为总开关和各支路开关使用。漏电保护器——保护人,漏电断路器有不同规格,现在多用二合一型(RCBO,漏电加短路过载保护合一),它的作用时当测到漏电时,就会断掉。比如热水器,如果热水器漏电被【漏电保护器】检测到就会切断电源,防止人受到伤害。漏电保护器的尺寸比空气开关要大,且价格也比空气开关贵。漏电保护器上还有个测试按钮,建议每个月按一下,可测试漏电跳闸功能是否完好。
2023-08-13 07:12:441

写给闺蜜的英文短句子

1. 写给闺蜜的祝福语用英语 1. 一个人总要走陌生的路,看陌生的风景,听陌生的歌,然后在某个不经意的瞬间,你会发现,原本是费尽心机想要忘记的事情真的就那么忘记了。 1.One is always on a strange road, watching strange scenery and listeningto strange music. Then one day, you will find that the things you tryhard to forget are already gone. 2.幸福,不是长生不老,不是大鱼大肉,不是权倾朝野。幸福是每一个微小的生活愿望达成。当你想吃的时候有得吃,想被爱的时候有人来爱你。 2.Happiness is not about being immortal nor having food or rights inone"s hand. It"s about having each tiny wish come true, or havingsomething to eat when you are hungry or having someone"s love when youneed love. 3.爱情是灯,友情是影子,当灯灭了,你会发现你的周围都是影子。朋友,是在最后可以给你力量的人。 3.Love is a lamp, while friendship is the shadow. When the lamp is off,you will find the shadow everywhere. Friend is who can give youstrength at last. 4.我爱你不是因为你是谁,而是我在你面前可以是谁。 4.I love you not for who you are, but for who I am before you. 5.爱情,要么让人成熟,要么让人堕落。 5.Love makes man grow up or sink down. 6.举得起放得下的叫举重,举得起放不下的叫负重。可惜,大多数人的爱情,都是负重的。 6.If you can hold something up and put it down, it is calledweight-lifting; if you can hold something up but can never put it down,it"s called burden-bearing. Pitifully, most of people are bearing heavyburdens when they are in love. 7.我们每个人都生活在各自的过去中,人们会用一分钟的时间去认识一个人,用一小时的时间去喜欢一个人,再用一天的时间去爱上一个人,到最后呢,却要用一辈子的时间去忘记一个人。 7.We all live in the past. We take a minute to know someone, one hour tolike someone, and one day to love someone, but the whole life to forgetsomeone. 8.一个人一生可以爱上很多的人,等你获得真正属于你的幸福之后,你就会明白一起的伤痛其实是一种财富,它让你学会更好地去把握和珍惜你爱的人。 8.One may fall in love with many people during the lifetime. When youfinally get your own happiness, you will understand the previoussadness is kind of treasure, which makes you better to hold and cherishthe people you love. 闺蜜:bff=best friend forever. 2. 写给闺密的的英文诗歌 【送给喜欢英文诗的朋友】永恒的爱 My luve"s like a red, red rose, That"s newly sprung in June; My luve"s like the melodie That"s sweetly play"d in tune. As fair art thou, my bonie lass, So deep in luve am I, And I will luve thee still, my Dear, Till a" the seas gang dry Till a" the seas gang dry, my Dear, And the rocks melt wi" the sun: I will luve thee still, my Dear, While the sands o" life shall run. And fare thee weel, my only Luve, And fare thee weel a while! And I will come again, my Luve, Tho" it were ten thousand mile! 我的爱人象一朵红色的,红色的玫瑰花 刚刚绽放在清新的六月里 我的爱人象一支动人的旋律 甜甜地拨动着美妙的音乐 你象一件精美的艺术品,可爱的女孩 我沉醉在深深的爱里 亲爱的,我会永远爱你 直到海枯水没 直到海桔水没 直到太阳晒化了石块 我仍然爱着你 即使沙粒都消失得无影无踪 再见,我唯一的爱 再见,只一段时间 亲爱的,我会再回来的 虽然我们现在远隔千万里 3. 求几句向闺蜜说的英文,要优美的,加翻译 Baby. We laughed and cried have wounded pain all over. Can we still do not regret, we love enduring as the universe. Between us the unbelievable small tacit understanding, is proof of our friendship. You understand my mood, I know your little secret. We will be at each other and said "I have, don"t be afraid". Together we childish grow together, cry together to laugh together. I love us, I love you. Thank you, thank you in my most beautiful years have been. 宝贝儿。 我们笑过哭过伤过痛过吵过闹过。 可我们依旧不后悔,我们的感情天长地久。 我们之间那些不可思议的小默契,就是我们友情的证明。 你懂我的小情绪,我了解你的小秘密。 我们会对着对方说“有我在,不要怕”。 我们一起幼稚一起成长,一起哭一起笑一起闹。 我爱我们自己,我爱你。 谢谢你在我最美好的年华里一直都在。
2023-08-13 07:12:491

3p空开和4p空开的区别

开关3p与4p的区别如下:1、3P用于三根火线的接线,也就是380V的接线,一般用于380V的电器。4P用于三火一零的接线,通常是用于带零线的380V电器,当然也能做总开关。3P是三开、控制三相电的,有三个进(出)线端,进三根火线。通常用于三相电总线开关和三相电设备。4P的就是在三开的基础上加一端子,为零线端子用N表示。2、1P、2P是用于单相的;3P、4P则用于三相的。当用于保护接零时,只能使用1P、3P;而当用于保护接地时,最好用2P、4P的。而1P+N只在相线上装设保护器,当工作时同时断开相线。3、4P开关的有两个用途。一、作电器隔离,用以断开线路的中性线,保证电气维修时维修人员的安全,我国过去广泛采用所谓接零保护的TN-C系统,因该系统的中性线是PEN线,不能用闸刀切断,线路中普遍采用3P开关,在电气维修过程中N线没有完全隔离造成点击事故。而4P开关可以有效的断开N线,起电气隔离作用。二、用作功能开关,如双电源自动切换装置(ATS)。但4P开关使用过程中存在断“零”的风险,因此在供配电设计时应慎用4P开关。扩展资料:空气开关的工作原理脱扣方式有热动、电磁和复式脱扣3种。当线路发生一般性过载时,过载电流虽不能使电磁脱扣器动作,但能使热元件产生一定热量,促使双金属片受热向上弯曲,推动杠杆使搭钩与锁扣脱开,将主触头分断,切断电源。当线路发生短路或严重过载电流时,短路电流超过瞬时脱扣整定电流值,电磁脱扣器产生足够大的吸力,将衔铁吸合并撞击杠杆,使搭钩绕转轴座向上转动与锁扣脱开,锁扣在反力弹簧的作用下将三副主触头分断,切断电源。开关的脱扣机构是一套连杆装置。当主触点通过操作机构闭合后,就被锁钩锁在合闸的位置。如果电路中发生故障,则有关的脱扣器将产生作用使脱扣机构中的锁钩脱开,于是主触点在释放弹簧的作用下迅速分断。按照保护作用的不同,脱扣器可以分为过电流脱扣器及失压脱扣器等类型。参考资料:百度百科-空气开关
2023-08-13 07:12:291

为什么要让员工明白企业目标?

要让员工清楚,企业到底对他们有什么样的期望,有什么样的考核标准,员工有什么样的责任,要讲得非常具体。 有非常清楚的“里程碑”体制。就是在什么时候做好什么事情,什么事情应该由谁负责,什么事情做到何种程度。把企业发展中各个节点的“里程碑”做好;而且,“里程碑”一定要清楚、透明,这对企业的成功转型至关重要。
2023-08-13 07:12:2715

一首女声粤语歌,开头是英文女声should i would i ,很有节奏感。

陈冠希的那首吗,新专辑有首开始是应采儿唱英文的
2023-08-13 07:12:262

DOOM3问题

把你的翻译了一下1700兆赫英特尔CPU的MMX公司与上证所和支持 SSE2256 MB系统内存32 MB的视频内存Winsock的初始化主机名:b79a6c7f2350498IP为:169.254.242.146的IP:122.90.39.78厄运使用的SIMD处理MMX公司与上证所和支持 SSE2启用冲洗至零模式启用Denormals,是零模式初始化文件系统------ ------当前的搜索路径:电子邮件: DOOM3/base电子邮件:占有率,基地 pak004.pk4(5137文件)电子邮件:占有率,基地 pak003.pk4(4676文件)电子邮件:占有率,基地 pak002.pk4(6120文件)电子邮件:占有率,基地 pak001.pk4(8972文件)电子邮件:占有率,基地 pak000.pk4(2698文件)电子邮件:占有率,基地 game00.pk4(2张)游戏的DLL:白0x0:0x0文件系统初始化。------------------------------------------- -----初始化Decls-------------------------------------- -------初始化renderSystem使用ARB的renderSystemrenderSystem初始化。--------------------------------------4966字符串读取字符串/ english.lang无法打开日志文件execing editor.cfgexecing default.cfgexecing DoomConfig.cfg不能Exec的autoexec.cfg4966字符串读取字符串/ english.lang-----初始化声音系统------音响系统初始化。------------------------------------------- ----- R_InitOpenGL初始化OpenGL的子系统注册窗口类...假冒注册窗口类......初始化清肝...调用 LoadLibrary("opengl32"):成功找不到进程内地址:wglGetExtensionsStringARB找不到进程内地址:wglSwapIntervalEXT找不到进程内地址:wglGetPixelFormatAttribivARB找不到进程内地址:wglGetPixelFormatAttribfvARB找不到进程内地址:wglChoosePixelFormatARB找不到进程内地址:wglCreatePbufferARB找不到进程内地址:wglGetPbufferDCARB找不到进程内地址:wglReleasePbufferDCARB找不到进程内地址:wglDestroyPbufferARB找不到进程内地址:wglQueryPbufferARB找不到进程内地址:wglBindTexImageARB找不到进程内地址:wglReleaseTexImageARB找不到进程内地址:wglSetPbufferAttribARB...调用的CDS:确定...创建窗口@ 0,0(1024 × 768)初始化OpenGL驱动...越来越直流:成功...企图用立体声... PIXELFORMAT 7选定...创造吉尔方面:成功...决策方面电流:成功找不到进程内地址:wglGetExtensionsStringARB找不到进程内地址:wglSwapIntervalEXT找不到进程内地址:wglGetPixelFormatAttribivARB找不到进程内地址:wglGetPixelFormatAttribfvARB找不到进程内地址:wglChoosePixelFormatARB找不到进程内地址:wglCreatePbufferARB找不到进程内地址:wglGetPbufferDCARB找不到进程内地址:wglReleasePbufferDCARB找不到进程内地址:wglDestroyPbufferARB找不到进程内地址:wglQueryPbufferARB找不到进程内地址:wglBindTexImageARB不知道你装好没有你的是什么版本的 是3个cd的么完了之后可以安个免cd补丁不知道能不能帮到你
2023-08-13 07:12:261

古力娜扎穿衣品味很好,她有哪些惊艳到你的穿搭造型?

深v晚礼服和吊带牛仔裤,晚礼服把她的好身材完美地展现出来,背带牛仔裤给人初恋般的感觉
2023-08-13 07:12:214

OPENGL是什么?

OpenGL三维图形标准是由AT&T公司UNIX软件实验室、IBM 、DEC、SUN、HP、Microsoft和SGI等多家公司在GL图形库标准的基础 上联合推出的开放式图形库,它使在微机上实现三维真实 感图形的生成与显示成为可能。由于OpenGL是开放的图形标 准,用户原先在UNIX下开发的OpenGL图形软件很容易移植到微 机上的WindowsNT/95上。笔者在VisualC++4.1(以下简称VC)集 成环境下,开发了基于OpenGL的三维真实感图形应用程序,现 介绍如下。 微机上的OpenGL开发环境 基于OpenGL标准开发的应用程序必须运行于32位Windows 平台下,如WindowsNT或Windows95环境;而且运行时还需有动态 链接库OpenGL32.DLL、Glu32.DLL,这两个文件在安装WindowsNT时已 自动装载到C:WINNTSYSTEM32目录下(这里假定用户将WindowsNT 安装在C盘上);而对于使用Windows95平台的用户,则需手工将 两个动态库复制到Windows95目录的SYSTEM子目录中。安装了 WindowsNT/95和VC4.1后,用户就具备了基于OpenGL开发三维图 形软件的基本条件。 OpenGL程序设计的基本步骤 1.OpenGL在WindowsNT下的运行机制 OpenGL工作在客户机/服务器模式下,当客户方(即基 于OpenGL标准开发的应用程序)向服务器(OpenGL核心机制)发出 命令时,由服务器负责解释这些命令。通常情况下,客户方 和服务器是运行在同一台微机上的。由于OpenGL的运行机制 是客户机/服务器模式,这使得用户能够十分方便地在网 络环境下使用OpenGL,OpenGL在WindowsNT上的这种实现方式通常 称为网络透明性。 OpenGL的图形库函数封装在动态链接库OpenGL32.DLL中, 客户机中的所有OpenGL函数调用,都被传送到服务器上,由 WinSrv.DLL实现功能,再将经过处理的指令发送到Win32设备驱 动接口(DDI),从而实现在计算机屏幕上产生图像。 若使用OpenGL图形加速卡,则上述机制中将添加两个 驱动器:OpenGL可装载客户模块(OpenGLICD)将安装在客户端;硬 件指定DDI将安装在服务器端,与WinDDI同一级别。 2.OpenGL的库函数 开发基于OpenGL的应用程序,必须先了解OpenGL的库函 数。OpenGL函数命令方式十分有规律,每个库函数均有前缀gl 、glu、aux,分别表示该函数属于OpenGL基本库、实用库或辅助 库。WindowsNT下的OpenGL包含了100多个核心函数,均以gl作为前 缀,同时还支持另外四类函数: OpenGL实用库函数:43个,以glu作为前缀; OpenGL辅助库函数:31个,以aux作为前缀; Windows专用库函数(WGL):6个,以wgl作为前缀; Win32API函数(WGL):5个,无前缀。 OpenGL的115个核心函数提供了最基本的功能,可以实 现三维建模、建立光照模型、反走样、纹理映射等;OpenGL实 用库函数在核心函数的上一层,这类函数提供了简单的调 用方法,其实质是调用核心函数,目的是减轻开发者的编程 工作量;OpenGL辅助库函数是一些特殊的函数,可以供初学者 熟悉OpenGL的编程机制,然而使用辅助库函数的应用程序只 能在Win32环境中使用,可移植性较差,所以开发者应尽量避 免使用辅助库函数;Windows专用库函数(WGL)主要针对WindowsNT /95环境的OpenGL函数调用;Win32API函数用于处理像素存储格 式、双缓存等函数调用。 3.VC环境下基于OpenGL的编程步骤 下面介绍在VC环境中建立基于Opeetting菜单选项,在Link栏的Lib输入域中 添加openg132.lib、glu32.lib,若需使用OpenGL的辅助库函数,则还 需添加glaux.lib。 (3)选择View/ClassWizard菜单选项,打开MFC对话框,在 ClassName栏中选择CMyTestView类,进行以下操作: 选择WM_CREATE消息,鼠标单击EditCode,将OpenGL初始化代码 添加到OnCreate()函数中: /*定义像素存储格式*/ PIXELFORMATDESCRIPTORpfd= { sizeof(PIXELFORMATDESCRIPTOR), 1, PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL, PFD_TYPE_RGBA, 24, 0,0,0,0,0,0, 0,0,0,0,0,0,0 32, 0,0, PFD_MAIN_PLANE, 0, 0,0,0, } CCLientdc(this); intpixelFormat=ChoosePixelFormat(dc.m_hDC,&pfd); BOOLsuccess=SetPixelFormat(dc.m_hDC,pixelFormat,&pfd); m_hRC=wglCreateContext(dc.m_hDC); 选择WM_DESTORY消息,在OnDestory()中添加以下代码: wglDeleteContext(m_hRC); 在MyTestView.cpp中,将以下代码添加到PreCreateWindows()函数中: cs.style|=WS_CLIPCHILDREN|WS_CLIPSIBLINGS; OpenGL只对WS_CLIPCHILDREN|WS_CLIPSIBLINGS类型窗口有效; 在MyTestView.cpp中,将以下代码添加到OnDraw()函数中: wglMakeCurrent(pDC->m_hDC,m_hRC); DrawScene();//用户自定义函数,用于绘制三维场景; wglMakeCurrent(pDC->m_hDC,NULL); 在MyTestView.cpp中,添加成员函数DrawScene(): voidCMyTestView::DrawScene() {/*绘制三维场景*/} (4)在MyTestView.h中包含以下头文件并添加类成员说明: #include #include #include 在CTestView类中的protected:段中添加成员变量声明: HGLRCm_hRC; 同时添加成员函数声明: DrawScene(); 这样,一个基于OpenGL标准的程序框架已经构造好,用 户只需在DrawScene()函数中添加程序代码即可。 建立三维实体模型 三维实体建模是整个图形学的基础,要生成高逼真 度的图像,首先要生成高质量的三维实体模型。 OpenGL中提供了十几个生成三维实体模型的辅助库函 数,这些函数均以aux作为函数名的前缀。简单的模型,如球 体、立方体、圆柱等可以使用这些辅助函数来实现,如 auxWireSphere(GLdoubleradius)(绘制一半径为radius的网状球体)。 但是这些函数难以满足建立复杂三维实体的需要,所以用 户可以通过其它建模工具(如3DS等)来辅助建立三维实体模 型数据库。笔者在三维实体的建模过程中采用3DS提供的2D Shape、3DLofter和3DEditor进行模型的编辑,最后通过将模型数 据以DXF文件格式输出存储供应用程序使用。 真实感图形的绘制 1.定义光照模型和材质 (1)光源。OpenGL提供了一系列建立光照模型的库函 数,使用户可以十分方便地在三维场景中建立所需的光照 模型。OpenGL中的光照模型由环境光(AmbientLight)、漫射光 (DiffuseLight)、镜面反射光(SpecularLight)等组成,同时还可设 置光线衰减因子来模拟真实的光源效果。 例如,定义一个黄色光源如下: GlfloatLight_position[]={1.0,1.0,1.0,0.0,}; GlfloatLight_diffuse[]={1.0,1.0,0.0,1.0,}; glLightfv(GL_LIGHT0,GL_POSTTION,light_position);//定义光源位置 glLightfv(GL_LIGHT0,GL_DIFFUSE,light_diffuse);//定义光源漫射光 光源必须经过启动后才会影响三维场景中的实体,可以通过以下指令使光源有效:< glEnable(LIGHTING);//启动光照模型; glEnable(GL_LIGHT0);//使光源GL_LIGHT0有效; OpenGL中一共可以定义GL_LIGHT0~GL_LIGHT7八个光源。 (2)材质。OpenGL中的材质是指构成三维实体的材料在 光照模型中对于红、绿、蓝三原色的反射率。与光源的定义 类似,材质的定义分为环境、漫射、镜面反射成分,另外还 有镜面高光指数、辐射成分等。通过对三维实体的材质定义 可以大大提高应用程序所绘制的三维场景的逼真程度。例 如: /*设置材质的反射成分*/ GLfloatmat_ambient[]={0.8,0.8,0.8,1.0}; GLfloatmat_diffuse[]={0.8,0.0,0.8,1.0};/*紫色*/ GLfloatmat_specular[]={1.0,0.0,1.0,1.0};/*镜面高光亮紫色*/ GLfloatmat_shiness[]={100.0};/*高光指数*/ glMaterialfv(GL_FRONT,GL_AMBIENT,mat_ambient);/*定义环境光反射率*/ glMaterialfv(GL_FRONT,GL_DIFFUSE,mat_diffuse);/*定义漫射光反射率*/ glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);/*定义镜面光反射率*/ glMaterialfv(GL_FRONT,GL_SHINESS,mat_shiness);/*定义高光指数*/ (3)材质RGB值与光源RGB值的关系。OpenGL中材质的颜色 与光照模型中光源的颜色含义略有不同。对于光源,R、G、B 值表示三原色在光源中所占有的比率;而对于材质定义,R、 G、B的值表示具有这种材质属性的物体对于三原色的反射 比率,场景中物体所呈现的颜色与光照模型、材质定义都相 关。例如,若定义的光源颜色是(Lr,Lg,Lb)=(1.0,1.0,1.0)(白光), 物体的材质颜色定义为(Mr,Mg,Mb)=(0.0,0.0,0.8),则最终到达人 眼的物体颜色应当是(Lr*Mr,Lg*Mg,Lb*Mb)=(0.0,0.0,0.8)(蓝色)。 2.读取三维模型数据 为了绘制三维实体,我们首先必须将预先生成的三 维实体模型从三维实体模型库中读出。下图描述了读取三 维实体模型的流程。 3.三维实体绘制 由于3DS的DXF文件中对于三维实体的描述是采用三角 形面片逼近的方法,而在OpenGL函数库中,提供了绘制三角形 面片的方法,所以为三维实体的绘制提供了方便。以下提供 了绘制三角形面片的方法: glBegin(TRANGLES);//定义三角形绘制开始 glVertexf((GLfloat)x1,(GLfloat)y1,(GLfloat)z1);//第一个顶点 glVertexf((GLfloat)x2,(GLfloat)y2,(GLfloat)z2);//第二个顶点 glVertexf((GLfloat)x3,(GLfloat)y3,(GLfloat)z3);//第三个顶点 glEnd();//绘制结束 为了提高三维实时动画的显示速度,我们利用了 OpenGL库中的显示列表(DisplayList)的功能,将三维场景中的实 体分别定义为单独的显示列表,预先生成三维实体。在图形 显示时,只需调用所需的显示列表即可显示相应的三维实 体,而不需要重新计算实体在场景中的坐标,避免了大量的 浮点运算。在调用显示列表前所作的旋转、平移、光照、材 质的设定都将影响显示列表中的三维实体的显示效果。具 体实现算法如下: for(ObjectNo=0;ObjectNo<实体个数;ObjectNo++) { glNewList(ObjectNo,GL_COMPILE);//创建第ObjectNo个实体的显示列表 for(Fac OpenGL是近几年发展起来的一个性能卓越的三维图形标准,它是在SGI等多家 世界闻名的计算机公司的倡导下,以SGI的GL三维图形库为基础制定的一个通 用共享的开放式三维图形标准。目前,包括Microsoft、SGI、IBM、DEC、SUN、 HP等大公司都采用了OpenGL做为三维图形标准,许多软件厂商也纷纷以OpenGL 为基础开发出自己的产品,其中比较著名的产品包括动画制作软件Soft Image 和3D Studio MAX、仿真软件Open Inventor、VR软件World Tool Kit、CAM软 件ProEngineer、GIS软ARC/INFO等等。值得一提的是,随着Microsoft公司在 Windows NT和最新的Windows 95中提供了OpenGL标准及OpenGL三维图形加速卡 (如北京黎明电子技术公司的AGC-3D系列三维图形加速卡)的推出,OpenGL将 在微机中有广泛地应用,同时也为广大用户提供了在微机上使用以前只能在高 性能图形工作站上运行的各种软件的机会。 OpenGL实际上是一个开放的三维图形软件包,它独立于窗口系统和操作系统, 以它为基础开发的应用程序可以十分方便地在各种平台间移植;OpenGL可以 与Visual C++紧密接口,便于实现机械手的有关计算和图形算法,可保证算 法的正确性和可靠性;OpenGL使用简便,效率高。它具有七大功能: 1) 建模 OpenGL图形库除了提供基本的点、线、多边形的绘制函数外,还提 供了复杂的三维物体(球、锥、多面体、茶壶等)以及复杂曲线和曲面 (如Bezier、Nurbs等曲线或曲面)绘制函数。 2) 变换 OpenGL图形库的变换包括基本变换和投影变换。基本变换有平移、 旋转、变比镜像四种变换,投影变换有平行投影(又称正射投影)和透 视投影两种变换。其变换方法与机器人运动学中的坐标变换方法完全一 致,有利于减少算法的运行时间,提高三维图形的显示速度。 3) 颜色模式设置 OpenGL颜色模式有两种,即RGBA模式和颜色索引(Color Index)。 4) 光照和材质设置 OpenGL光有辐射光(Emitted Light)、环境光 (Ambient Light)、漫反射光(Diffuse Light)和镜面光(Specular Light)。 材质是用光反射率来表示。场景(Scene)中物体最终反映到人眼的颜色是光 的红绿蓝分量与材质红绿蓝分量的反射率相乘后形成的颜色。 5) 纹理映射(Texture Mapping) 利用OpenGL纹理映射功能可以十分逼真 地表达物体表面细节。 6) 位图显示和图象增强 图象功能除了基本的拷贝和像素读写外,还提供 融合(Blending)、反走样(Antialiasing)和雾(fog)的特殊图象效果处理。 以上三条可是被仿真物更具真实感,增强图形显示的效果。 7) 双缓存(Double Buffering)动画 双缓存即前台缓存和后台缓存,简而言 之,后台缓存计算场景、生成画面,前台缓存显示后台缓存已画好的画面。 此外,利用OpenGL还能实现深度暗示(Depth Cue)、运动模糊(Motion Blur)等 特殊效果。从而实现了消隐算法。
2023-08-13 07:12:181

超好听的闺蜜英文名?

Abby!听上去像一只甜美温暖的小猫咪,可以抱着取暖的那种!
2023-08-13 07:12:152