英语中英文翻译
第一篇：
对龙图腾的崇拜在中国大约已绵延了八千多年。中国龙是古人将鱼、蛇、马、牛等动物与云雾、雷电等自然天象集合而成的一种神物。中国龙的形成与中华民族的多元融合过程同步。在中国人的心目中，龙具有振奋腾飞、开拓变化的寓意和团结凝聚的精神。
Dragon totem worship in China has been around for the last 8,000 years. The ancients in China considered the dragon a fetish that combines animals including the fish, snake, horse and ox with cloud, thunder, lightning and other natural celestial phenomena. The Chinese dragon was formed in accordance with the multicultural fusion process of the Chinese nation. To the Chinese, the dragon signifies initiative,innovation and cohesion.
第二篇：
长城是人类创造的世界奇迹之一。如果你到了中国却没去过长城，就像到了巴黎没有去看看埃菲尔铁塔，或者就像到了埃及没有去看金字塔一样。人们常说：“不到长城非好汉。”实际上，长城最初只是一些断断续续的城墙，直到秦朝统一中国后才将其连成长城。然而，今天我们看到的长城——东起山海关，西至嘉峪关——大部分都是在明代修建的。
The Great Wall is one of the wonders of the world that was created by human beings! If you come to China without climbing the Great Wall, it…s just like going to Paris without visiting the Eiffel Tower, or going to Egypt without visiting the Pyramids! Men often say, "He who does not reach the Great Wall is not a true man." In fact, it began as independent walls for different states when it was first built, and did not become the "Great Wall" until the Qin Dynasty when the emperor united China. However, the wall we see today, starting from Shanhaiguan Pass in the east to Jiayuguan Pass in the west, was mostly built during the Ming Dynasty.
第三篇：
饺子Dumplings ravioli 是深受中国人民喜爱的传统食品。相传为古代医圣张仲景发明。饺子的制作是包括： 1）擀皮、2）备馅、3）包馅水煮三个步骤。其特点是皮薄馅嫩，味道鲜美，形状独特，百食不厌。民间有“好吃不过饺子”的俗语。中国人接亲待客、逢年过节都有包饺子吃的习俗，寓意吉利。对崇尚亲情的中国人来说，“更岁交子”吃饺子，更是欢度除夕、辞旧迎新必不可少的内容。
Dumplings are one of the Chinese people?s favorite traditional dishes. According to an ancient Chinese legend, dumplings were first made by the medical saint---Zhang Zhongjing. There are three steps involved in making dumplings: 1) make dumpling wrappers out of dumpling flour; 2) prepare the dumpling stuffing; 3) make dumplings and boil them. With thin and elastic dough skin, fresh and tender stuffing, delicious
taste, and unique sha pes, dumplings are worth eating hundreds of times. There?s an old saying that claims, “Nothing could be more delicious than dumplings”. During the Spring Festival and other holidays, or when treating relatives and friends, Chinese people like to follow the auspicious custom of eating dumplings. To Chinese people who show high reverence for family love, having dumplings at the moment the old year is replaced by the new is an essential part of bidding farewell to the old and ushering in the new year.
第四篇：
闻名于世的丝绸之路是一系列连接东西方的路线。丝绸之路延伸6,000多公里。得名于古代中国的丝绸贸易。丝绸之路上的贸易在中国、南亚、欧洲和中东文明发展中发挥了重要作用。正是通过丝绸之路，中国的造纸、火药、指南针、印刷等四大发明才被引介到世界各地。同样，中国的丝绸、茶叶和瓷器（porcelain）也传遍全球。物质文化的交流是双向的。欧洲也通过丝绸之路出口各种商品和植物，满足中国市场的需要。
The world-renowned Silk Road is a series of routes connecting the East and the West. It extended more than 6,000 kilometers. The Silk Road was named after ancient China?s silk trade which played an important role in the civilization development of China, South Asia, Europe and the Middle East. It was through the Silk Road that papermaking, gunpowder, compass and printing of the four great inventions of ancient China were introduced around the world. Similarly, Chinese silk, tea and porcelain spread all over the world. Europe also exported various goods and plants through the Silk Road to meet the needs of the Chinese market.
第五篇：
中国园林是经过三千多年演化而成的独具一格的园林景观。它既包括为皇室成员享乐而建造的大型花园，也包括学者、商人和卸任的政府官员为摆脱嘈杂的外部世界而建造的私家花园。这些花园构成了一种意在表达人与自然之间应有的调和关系的微缩景观。典型的中国园林周围有围墙，园内有池塘、假山、树木、花草以及各种各样由弯曲的小路和走廊衔接的建筑。散步在花园中，人们可以看到一系列精心设计的景观犹如山水画卷一般展示在面前。
Chinese gardens came into being after three thousand years of evolution and unique landscape. It includes both large garden built for the royal family enjoyment, including academics, businessmen, and former government officials to get rid of the noise of the outside world and build private garden. These gardens constituted an intended to express the human and the nature should be harmonious relations between miniature landscape. A typical Chinese garden surrounded by a fence, garden with ponds, rockeries, trees, flowers and plants, and various buildings connected by winding paths and corridors. Stroll in the garden, people can see a series of carefully designed like landscape picture show in front of the landscape.
第六篇：
中国人自古以来就在中秋时节庆祝丰收，这与北美地区庆祝感恩节的习俗十分相似，过中秋节的习俗与唐代早期在中国各地开始流行，中秋节在农历八月十五，是人们拜月的节日，这天夜晚皓月当空，人们合家团聚，共赏明月。2006年，中秋节被列为中国的文化遗产，2008年又被定为公共假日，月饼被视为中秋节不可或缺的美食，人们将月饼作为礼物馈赠亲友或在家庭聚会上享用。传统的月饼上带有“寿”(longevity)、“福”或“和”等字样。
Since ancient times, the Chinese people usually celebrate harvest in the Mid-Autumn, which is similar to the custom of celebrating Thanksgiving in the North America. The tradition of celebrating Mid-Autumn festival became popular throughout China in the early Tang dynasty. The lunar August 15 is a day for people worshiping the moon. On this day, under the dazzling bright moon, families reunite and enjoy the moon?s beauty. In 2006, Mid-Autumn festival was listed as one of China's cultural heritage, and in 2008, it was classified as a public holiday. Moon cakes, as indispensable delicious food of the festival, were gifts people sent to families and friends during the festival and usually eaten on family gatherings. There are characters of “longevity”，“good fortune”and “harmony” on the Traditional moon cakes.
中国共产党，其他政党及政协相关名称 中国共产党中央委员会Central Committee of the Communist Party of China 中央政治局Political Bureau of the Central Committee of the CPC 中央政治局常务委员会Standing Committee of the Political Bureau of the CPC 中央书记处Secretariat of the Central Committee of the CPC 中央军事委员会Central Military Commission of the CPC 中央纪律检查委员会Central Commission for Discipline Inspection of the CPC 中央办公厅General Office, CCCPC 中央组织部Organization Department, CCCPC 中央宣传部Publicity Department, CCCPC 中央统一战线部United Front Work Department, CCCPC 中央对外联络部International Liaison Department, CCCPC 中央政法委员会Committee of Political and Legislative Affairs, CCCPC 中央政策研究室Policy Research Office, CCCPC 中央直属机关工作委员会Work Committee for Offices Directly under the CCCPC 中央国家机关工作委员会State Organs Work Committee of the CPC 中央台湾工作委员会Taiwan Affairs Office, CCCPC 中央对外宣传办公室International Communication Office, CCCPC 中央党校Party School of the CPC 中央党史研究室Party History Research Centre, CCCPC 中央文献研究室Party Literature Research Centre, CCCPC 中央翻译局Compilation and Translation Bureau, CCCPC 中央外文出版发行事业局 China Foreign Languages Publishing and Distribution Administration 中央档案馆Archives Bureau, CCCPC 《中国人民政治协商会议及其机构》 The Chinese People’s Political Consultative Conference (CPPCC) and Its Structure 中国人民政治协商会议全国委员会National Committee of the CPPCC 中国人民政治协商会议全国委员会常务委员会 Standing Committee of the National Committee of the CPPCC 中国人民政治协商会议全国委员会办公厅 General Offices of the CPPCC National Committee 专门委员会Special Committee 提案委员会Committee for Handling Proposals 经济委员会Committee for Economic Affairs 人口资源环境委员会Committee of Population, Resources and Environment 教科文卫体委员会Committee of Education, Science, Culture, Health and Sports
my friend and I are taking a , we are seeing a boy sit on the chair,he is crying,we go and ask him.“what’s the matter with you” he tell us“I can’t find my dog can you help me”.“yes,I can”.And we help him find his dong .oh it stay under the big tree! 今天我和我的朋友一起去散步。突然我们看见一个男孩坐在椅子上，他哭的很伤心。我们走过去问他：“你怎么了”。他告诉我们：“我的狗不见了，你们能帮我找到它吗”。“是的，我们能帮你找到你的狗”然后我们帮助他找到了他的狗，原来是它呆在一棵大树下。 day an old man siselling a big young man comes to the elephant and begins to look at it old man goes up to him and says inhis ear,“Don't sa y anything about the elephant before I sell it,then i'll give you some money.”“All right,”says the young the old man slles the elephant,he gives the young man some money and says,“Now,can you tell me how you find the bad ears of theelephant?”“I don't find the bad ears,”says the young man.“Then why do you look at the elephant slowly?”asks the old young man answers,“Because I never see an elephant before,and I want to know what it looks like.” 一天，一个老的男人正在卖一头大象。一个年轻的男人走向大象然后开始慢慢看着它（大象），这个老的男人走向他对着他的耳朵说，“不要在我卖出它（大象）之前说关于它（大象）的事，然后我会给你一些钱。”“好的”，这个年轻的男人说。在这个老的男人卖出大象后，他给了年轻的男人一些钱并且说，“现在，你可以告诉我你是怎样知道大象的坏的耳朵了吧？”“我不知道坏的耳朵”，这个年轻的男人说。“然后为什么你慢慢的看着大象？”这个老的男人问。这个年轻的男人回答，“因为我在这之前从来没有见过大象，还有我想知道它（大象）是什么样子的。” 3.An old woman had a cat. The cat was very old; she could not run quickly, and she could not bite, because she was so old. One day the old cat saw a mouse; she jumped and caught the mouse. But she could not bite it; so the mouse got out of her mouth and ran away, because the cat could not bite it.? Then the old woman became very angry because the cat had not killed the mouse. She began to hit the cat. The cat said, "Do not hit your old servant. I have worked for you for many years, and I would work for you still, but I am too old. Do not be unkind to the old, but remember what good work the old did when they were young."? 一位老妇有只猫，这只猫很老，它跑不快了，也咬不了东西，因为它年纪太大了。一天，老猫发现一只老鼠，它跳过去抓这只老鼠，然而，它咬不住这只老鼠。因此，老鼠从它的嘴边溜掉了，因为老猫咬不了它。? 于是，老妇很生气，因为老猫没有把老鼠咬死。她开始打这只猫，猫说：“不要打你的老仆人，我已经为你服务了很多年，而且还愿意为你效劳，但是，我实在太老了，对年纪大的不
Chapter 1 Passage 1 Human Body In this passage you will learn: 1. Classification of organ systems 2. Structure and function of each organ system 3. Associated medical terms To understand the human body it is necessary to understand how its parts are put together and how they function. The study of the body's structure is called anatomy; the study of the body's function is known as physiology. Other studies of human body include biology, cytology, embryology, histology, endocrinology, hematology, immunology, psychology etc. 了解人体各部分的组成及其功能，对于认识人体是必需的。研究人体结构的科学叫解剖学；研究人体功能的科学叫生理学。其他研究人体的科学包括生物学、细胞学、胚胎学、组织学、内分泌学、血液学、遗传学、免疫学、心理学等等。 Anatomists find it useful to divide the human body into ten systems, that is, the skeletal system, the muscular system, the circulatory system, the respiratory system, the digestive system, the urinary system, the endocrine system, the nervous system, the reproductive system and the skin. The principal parts of each of these systems are described in this article. 解剖学家发现把整个人体分成骨骼、肌肉、循环、呼吸、消化、泌尿、内分泌、神经、生殖系统以及感觉器官的做法是很有帮助的。本文描绘并阐述了各系统的主要部分。 The skeletal system is made of bones, joints between bones, and cartilage. Its function is to provide support and protection for the soft tissues and the organs of the body and to provide points of attachment for the muscles that move the body. There are 206 bones in the human skeleton. They have various shapes - long, short, cube - shaped, flat, and irregular. Many of the long bones have an interior space that is filled with bone marrow, where blood cells are made. 骨骼系统由骨、关节以及软骨组成。它对软组织及人体器官起到支持和保护作用，并牵动骨胳肌，引起各种运动。人体有206根骨头。骨形态不一，有长的、短、立方的、扁的及不规则的。许多长骨里有一个内层间隙，里面充填着骨髓，这即是血细胞的制造场所。 A joint is where bones are joined together. The connection can be so close that no movement is possible, as is the case in the skull. Other kinds of joints permit movement: either back and forth in one plane - as with the hinge joint of the elbow - or movement around a single axis - as with the pivot joint that permits the head to rotate. A wide range of movement is possible when the ball - shaped end of one bone fits into a socket at the end of another bone, as they do in the shoulder and hip joints. 关节把骨与骨连接起来。颅骨不能运动，是由于骨与骨之间的连接太紧密。但其它的关节可允许活动，如一个平面上的前后屈伸运动，如肘关节；或是绕轴心旋转运动，如枢轴点允许头部转动。如果一根骨的球形末端插入另一根骨的臼槽里，大辐度的运动（如肩关节、髋关节）即成为可能。 Cartilage is a more flexible material than bone. It serves as a protective, cushioning layer where bones come together. It also connects the ribs to the breastbone and provides a structural base for the nose and the external ear. An infant's skeleton is made of cartilage that is gradually replaced by bone as the infant grows into an adult. 软骨是一种比一般骨更具韧性的物质。它是骨连结的保护、缓冲层。它把肋骨与胸骨连结起来，也是鼻腔与内耳的结构基础。一个婴儿的骨骼就是由软骨组成，然后不断生长、
Unit 1 1.餐饮行业与电影行业的共同之处在于其小型企业的失败率很高。 The restaurant industry has one thing in common with the film industry: the high failure rate among its small business. 2.他的伟大在于他具有非凡的能力，集科学家和实业家的品质于一身。 His greatness lies in his outstanding ability to connect the qualities of a scientist with those of an industrialist. 3.像工作单位取代居住地一样，我们的种族身份已被职业身份所取代。这一现象在流动作业的行业中表现得尤为明显。 We have replaced ethnic identity with professional identity, the way we replaced neighborhoods with workplace, which is quite obvious among the mobile professions. 4.显然，任何一家大公司的老板都不可能事事亲力亲为，需要找一些方法把他们的理念传达给他人。 Plainly, in any large enterprise the boss cannot be directly involved in everything, and some means have to be found to transfer his belief to others. 5.没有任何人愿意再过那种自己无法控制、要别人认可、任人摆布的日子了。No one was willing to experience the feeling of being out of control and dependent on someone else’s approval, at someone else’s mercy. 6.人们渴望一种成就感，渴望有能力凭自己的手、自己的脑、自己的意志办成事情。 The human being longs for a sense of accomplishment, and being able to do things, with his hand, with his mind and with his will. 7.政府希望通过大量出售资产来弥补损失。 The government hopes that the sale of a chunk of its assets will help make up for its lose. 8.现代社会里人们的身份更多地由他们所从事的职业，而不是他们所生活的社区来界定。
Ex 6E 1. 今天上午你干了多少活儿？（work） How much work have you done this morning? 2. 开凿隧道需要大量劳力。（labour） To dig a tunnel will need a great amount of labour. 3. 他做了最少的工作。（work） He’s done the least work. 4. 处理这一问题有几种方法。（methods） There are several methods of approaching this problem. 5. 我不懂多少法语。 I know little French. 6. 少说空话（empty talk）多干实事。（practical work）There must be less empty talk but more practical work. 7. 有许多人出席招待会吗？ Were there many people at the reception? 8. 我可以跟你谈几句话吗？（words） May I have a few words with you? 9. 今天参观展览会的人数比昨天少。 There were fewer people today at the exhibition than yesterday.
10. 哈利犯的错误最少 Harry made the fewest mistakes. 11. 你读的诗（poetry）和做的练习（exercises）都比我多。You’ve learnt more poetry and done more exercises than I have. 12. 杰克做的工作最多，犯的错误也最多。 Jack’s done the most work and made the most mistakes. 13. 他做了很多工作，也犯了汗多错误。 He’s done a lot of work and made a lot of mistakes. 14. 百万富翁有许多钱财(money)，也有许多烦恼。 A millionaire has lots of money—and lots of worries. 15. 安娜因为没有足够的钱财而烦恼丛生。 Anna has enough worries because she hasn’t got enough money. 16. 每隔几分钟电话铃就响一次。 The telephone rang every few minutes. 17. 在过去这几天的寒冷日子里，我们一直在坚持实验。We have been persisting in making the experiment all these last few cold days. 18. 他新编的两本英语语言学著作都将在2011年出版。Both his next books on English linguistics will come out in 2006.
第二部分 控制理论 第1章 1.1控制系统的引入 人类控制自然力量的设计促进人类历史的发展,我们已经广泛的能利用这种量进行在人类本身力量之外的物理进程?在充满活力的20世纪中,控制系统工程的发展已经使得很多梦想成为了现实?控制系统工程队我们取得的成就贡献巨大?回首过去,控制系统工程主要的贡献在机器人,航天驾驶系统包括成功的实现航天器的软着陆,航空飞机自动驾驶与自动控制,船舶与潜水艇控制系统,水翼船?气垫船?高速铁路自动控制系统,现代铁路控制系统? 以上这些类型的控制控制系统和日常生活联系紧密,控制系统是一系列相关的原件在系统运行的基础上相互关联的构成的,此外控制系统存在无人状态下的运行,如飞机自控驾驶,汽车的巡航控制系统?对于控制系统,特别是工业控制系统,我们通常面对的是一系列的器件,自动控制是一个复合型的学科?控制工程师的工作需要具有力学,电子学,机械电子,流体力学,结构学,无料的各方面的知识?计算机在控制策略的执行中具有广泛的应用,并且控制工程的需求带动了信息技术的与软件工程的发展? 通常控制系统的范畴包括开环控制系统与闭环控制系统,两种系统的区别在于是否在系统中加入了闭环反馈装置? 开环控制系统 开环控制系统控制硬件形式很简单,图2.1描述了一个单容液位控制系统, 图2.1单容液位控制系统 我们的控制目标是保持容器的液位h 在水流出流量V 1变化的情况下保持在一定 可接受的范围内,可以通过调节入口流量V 2实现?这个系统不是精确的系统,本系 统无法精确地检测输出流量V 2,输入流量V 1以及容器液位高度?图2.2描述了这 个系统存在的输入(期望的液位)与输出(实际液位)之间的简单关系, 图2.2液位控制系统框图 这种信号流之间的物理关系的描述称为框图?箭头用来描述输入进入系统,以及
2.3小说类（Practice26～Practice36） Practice26 It is a very long time since I attended a Mass.In this pilgrimage town you get the real thing,with a crowd of real worshippers--those who come include the paralyzed,the crippled,the blind,the deformed,the dying,a terrible parade,a parade Mass proceeded.It would have been only courteous to kneel at the proper time,as all did,since I had voluntarily come:but for all the disapproving glances,I the stiff--necked Jew,would not kneel.I remember the first break with my own religion as though it were yesterday.I can still feel my cheek stinging from the slap of the mashiakh,the study hall supervisor,as I trudge in the snow on t he town square in the purple evening,having been ordered out of the hall for impudent heresy.Perhaps in a larger city,the mashiakh would have had the sense to smile at my effrontery,and pass it off.Then the whole course of my life might have been different. 【参考译文】 我已经很久没有做过弥散。在这个众人朝拜的圣城，我看到了真正的弥散。看到一批一批虔诚的善男信女，其中有瘫痪的，有跛足的，有失明的，有畸形的，有奄奄一息的，他们组成一支令人目不忍赌的行列。如果有谁果真相信就连麻雀坠地这样的小事上帝也注意到了，那么这些人一定是他有意残酷作弄的对象，或是他千虑一失的牺牲品。教堂里寒气逼人，但弥撒开始后，教堂里的气氛与我心中的凄凉相比，却温暖如春。既然我来这里是完全出于自愿。仅仅为了礼貌起见，我本应该在需要下跪的时候和他们一起下跪。但是，我这个倔强
中国小吃官方翻译 （中英文对照） A list of Chinese dainty snacks 中式早餐/午餐/晚餐 Chinese -Breakfast/lunch/supper 米饭类 Rice 1、竹筒饭 Bamboo rice 2、鸡粥 Chicken gruel 3、粽子 Chinese rice-pudding/Glutinous rice dumpling/ z ongzi 4、稀饭 Congee / millet gruel/ Rice porridge 5、蒸饭 Boiled rice/ Steamed rice 6、汤团 Boiled rice dumpling 7、卤肉饭 Braised pork rice/ Rice with red-cooked pork 8、炒米饭 Fried rice 9、蛋炒饭 Fried rice with egg 10、及第粥 Giblets Congee
11、糯米饭 Glutinous rice 12、油饭 Glutinous oil rice 13、腊八粥 Laba porridge (rice porridge with nuts and d ried fruit eaten on the eighth day of the twelfth luna r month) 14、白饭 Plain cooked rice /Plain white rice 15、紫米八宝饭 Purple rice with eight-treasures rice pu dding 16、饭团 Rice and vegetable roll/ Rice ball 17、红苕稀饭 Rice porridge with sweet potato 18、田鸡片粥 Sliced Frog Congee 19、地瓜粥 Sweet potato congee 20、稀粥 Thin gruel 21、稀饭 Congee / Millet gruel/ Rice porridge 22、蒸饭 Boiled rice/ Steamed rice 23、汤团 Boiled rice dumpling 24、卤肉饭 Braised pork rice/ Rice with red-cooked pork 25、蛋炒饭 Fried rice with egg 26、糯米饭 Glutinous rice
力学的基本概念 对运动，时间和作用力作出科学分析的分支被称为力学，它由静力学和动力学两部分组成。静力学对静止系统进行分析，即在静力学系统中不考虑时间这个因素，而动力学是对随时间变化的系统进行分析。 通过配合表面作用力被传送到机器的各个部件，例如从齿轮传到轴或者是从一个齿轮通过啮合传递到另一个齿轮，从三角皮带传到皮带轮，或者从凸轮传到从动件。由于很多原因，我们必须知道这些力的大小。在边界或啮合表面作用力的分布一定要合理，他们的大小必须在构成配合表面材料的工作极限以内。例如，如果施加在滑动轴承的作用力太大，那么它就会将油膜挤压出来，并且造成金属和金属的接触，使温度过高，使滑动轴承失效。如果作用在齿轮轮齿上的力过大，就会将油膜从齿间挤压出来。这将会导致金属表层的破裂和剥落，噪音增大，运动不精确，直至报废。在力学研究中，我们主要关心力的大小，方向和作用点。 当一些物体连接在一起形成一个组合或者系统时，在两个接触的物体之间作用和反作用的力被称之为约束力。这些力约束各个物体使其处于特有的状态。作用在这个物体系统外部的力叫做外力。 电力，磁力和重力是不需要直接接触就可以施加的力的实例。不是全部但是大多数，与我们有关的力都是通过直接的实际接触或者是机械接触才能产生的。 力是一个矢量。力的要素就是它的大小，它的方向和作用点，一个力的方向包括力的作用线的概念和它的指向。因此，沿着力的作用线，力的方向有正副之分。 沿着两条不重合的平行线作用在一个物体上的两个大小相等、方向相反的作用力不能合并成一个合力。任何作用在一个刚体上的两个力构成一个力偶。力偶臂就是这两个力的作用线之间的垂直距离。 力偶矩也是一个矢量，用M表示，垂直于力偶面；M的方向主要依据右手螺旋定则确定。力矩的大小是力偶臂与其中一个力的大小的乘积。 如果一个刚体满足下列条件，那么它处于平衡状态： （1）作用在它上面的所有外力的矢量和等于零。 （2）作用在它上面的所有外力对于任何一个轴的力矩之和等于零。 在数学上这两个条件被表示为 ∑=0 M F∑=0 所使用的术语“刚体”可以是整台机器，一个机器中几个相互连接的零件，一个单独的零件或者是零件的一部分。隔离体简图是一个从机器中隔离出来的物体的草图或视图，在图中标出所有作用在物体上的力和力矩。通常图中应该包括已知的力和力矩的大小、方向还有其他相关信息。 这样得到的图成为“隔离体简图”，其原因是图中的零件或物体的一部分已经从其余的机械零部件中隔离出来了，其余的机器零部件对它的作用已经用力和力矩代替。对于一个完整的机器零部件隔离体简图，图上所表示出的，作用在其上面的力和力矩是通过与其相邻或相接触零件施加的，是外力。对于一个零件的一部分的隔离体简图作用在切面上的力和力矩都是通过被切掉部分施加的，是内力。 绘制和提交简洁、清晰的隔离体简图是工程交流的核心。这是真实的，因为
Table of Contents Uuit 1 What is Geomatics? （什么是测绘学） (2) Unit 2 Geodetic Surveying and Plane Surveying（大地测量与平面测量） (6) Unit 3 Distance Measurement（距离测量） (10) Unit 4 Angle and Direction Measurement（角度和方向测量） (14) Unit 5 Traversing （导线测量） (17) Unit 6 Methods of Elevation Determination（高程测量方法） (21) Unit 7 Robotic Total Station （智能型全站仪） (25) Unit 8 Errors in Measurement（测量工作中的误差） (29) Unit 9 Basic Statistical Analysis of Random Errors (32) Unit 10 Accuracy and Precision （准确度和精度） (35) Unit 11 Least-Squares Adjustment (38) Unit 12 Geodesy Concepts (40) Unit 13 Geoid and Reference Ellipsoid (42) Unit 14 Datums, Coordinates and Conversions (44) Unit 15 Map Projection (46) Unit 16 Gravity Measurment (48) Unit 17 Optimal Design of Geomatics Network (50) Unit 18 Construction Layout （施工放样） (53) Unit 19 Deformation Monitoring of Engineering Struvture (56) Unit 20 Understan ding the GPS（认识GPS） (59) Uuit 21 Understanding the GPS (II) 认识GPS(II) (62) Unit 22 Competition in Space Orbit（太空轨道上的竞争） (64) Unit 23 GIS Basics（GIS 的基础） (69) Unit 24 Data Types and Models in GIS GIS中的数据类型和模型 (75) Unit 25 Digital Terrain Modeling（数字地面模型） (79) Unit 26 Applications of GIS (83) Unit 27 Developments of photogrammetry (87) Unit 28 Fundamentals of Remote Sensing （遥感的基础） (90) Unit 29 Digital Image Processing and Its Applications in RS (94) Unit 30 Airborne Laser Mapping Technology（机载激光测图技术） (99) Unit 31 Interferometric SAR(InSAR) (102) Unit 32 Brief Introduction toApplied Geophysics (104) Unit 33 Origon of Induced Polarization (105) Unit 34 International Geoscience Organization (108) Unit 35 Prestigious Journals in Geomatics (110) Unit 36 Relevant Surveying Instrument Companies (115) Unit 37 Expression of Simple Equations and Scientific Formulsa (116) Unit 38 Professional English Paper Writing (119) Unit 39 Translation Techniques for EST (127)
美国学校提供的学位有很多种，依所学领域的不同，而有不同的学位。以下列出的是美国高等教育中较常见的学位: Ph.D.（Doctor of Philosophy）: 博士学位。而有些领域的博士课程会有不同的学位名称，如D.A.(Doctor of Arts)、Ed.D.(Doctor of Education) M.B.A.（Master of Business Administration）: 商学管理硕士。 M.A.（Master of Arts）硕士；B.A.（Bachelor of Arts）学士: 两者皆属于人文、艺术或社会科学的领域，如文学、教育、艺术、音乐。 M.S.（Master of Science）硕士；B.S.（Bachelor of Science）学士: 两者皆属于理工、科学的领域，如数学、物理、信息等。 Associate Degree（副学士学位）: 读完两年制小区大学或职业技术学校所得到的学位。 Dual Degree（双学位）: 是由两个不同学院分别授与，因此得到的是两个学位。 Joint Degree：为两个不同学院联合给予一个学位，如法律经济硕士。 major 主修 minor 辅修 大家要搜索自己的专业, 请按 ctrl + F 打开搜索窗口, 然后输入关键字查询 学士 Bachelor of Arts B.A. 文学士 Bachelor of Arts in Education B.A.Ed., B.A.E. 教育学文学士 Bachelor of Arts in Computer Science B.A.CS 计算机文学士 Bachelor of Arts in Music B.A.Mus,B.Mus 音乐艺术学士 Bachelor of Arts in Social Work B.A.S.W 社会工作学文学士 Bachelor of Engineering B.Eng., B.E 工学士 Bachelor of Engineering in Social Science B.Eng.Soc 社会工程学士 Bachelor of Engineering in Management B.Eng.Mgt 管理工程学士 Bachelor of Environmental Science/Studies B.E.Sc., B.E.S 环境科学学士 Bachelor of Science B.S 理学士 Bachelor of Science in Business B.S.B., B.S.Bus 商学理学士 Bachelor of Science in Business Administration B.S.B.A 工商管理学理学士 Bachelor of Science in Education B.S.Ed., B.S.E 教育学理学士 Bachelor of Science in Engineering B.S.Eng., B.S.E 工程学理学士 Bachelor of Science in Forestry B.S.cF 森林理学士 Bachelor of Science in Medicine B.S.Med 医学理学士 Bachelor of Science in Medical Technology B.S.M.T., B.S.Med.Tech 医技学理学士 Bachelor of Science in Nursing B.S.N., B.S.Nurs 护理学理学士 Bachelor of Science in Nutrition B.SN 营养学理学士 Bachelor of Science in Social Work B.S.S.W 社会工作学理学士 Bachelor of Science in Technology B.S.T 科技学理学士 Bachelor of Computer Science B.CS 计算机理学士 Bachelor of Computer Special Science B.CSS 计算机特殊理学士 Bachelor of Architecture B. Arch. 建筑学士 Bachelor of Administration B.Admin. 管理学士
I WAS born in the year 1632, in the city of York, of a good family, though not of that country, my father being a foreigner of Bremen, who settled first at Hull. He got a good estate by merchandise, and leaving off his trade, lived afterwards at York, from whence he had married my mother, whose relations were named Robinson, a very good family in that country, and from whom I was called Robinson Kreutznaer; but, by the usual corruption of words in England, we are now called - nay we call ourselves and write our name - Crusoe; and so my companions always called me. I had two elder brothers, one of whom was lieutenant-colonel to an English regiment of foot in Flanders, formerly commanded by the famous Colonel Lockhart, and was killed at the battle near Dunkirk against the Spaniards. What became of my second brother I never knew, any more than my father or mother knew what became of me. Being the third son of the family and not bred to any trade, my head began to be filled very early with rambling thoughts. My father, who was very ancient, had given me a competent share of learning, as far as house-education and a country free school generally go, and
1、应力和应变 应力和应变的概念可以通过考虑一个棱柱形杆的拉伸这样一个简单的方式来说明。一个棱柱形的杆是一个遍及它的长度方向和直轴都是恒定的横截面。在这个实例中，假设在杆的两端施加有轴向力F，并且在杆上产生了均匀的伸长或者拉紧。 通过在杆上人工分割出一个垂直于其轴的截面mm，我们可以分离出杆的部分作为自由体【如图1(b)】。在左端施加有拉力P，在另一个端有一个代表杆上被移除部分作用在仍然保存的那部分的力。这些力是连续分布在横截面的，类似于静水压力在被淹没表面的连续分布。 力的集度，也就是单位面积上的力，叫做应力，通常是用希腊字母，来表示。假设应力在横截面上是均匀分布的【如图1(b)】，我们可以很容易的看出它的合力等于集度，乘以杆的横截面积A。而且，从图1所示的物体的平衡，我们可以看出它的合力与力P必须的大小相等，方向相反。因此，我们可以得出 等式(1)可以作为棱柱形杆上均匀应力的方程。这个等式表明应力的单位是，力除以面积。当杆被力P拉伸时，如图所示，产生的应力是拉应力，如果力在方向是相反，使杆被压缩，它们就叫做压应力。 使等式(1)成立的一个必要条件是，应力，必须是均匀分布在杆的横截面上。如果轴向力P作用在横截面的形心处，那么这个条件就实现了。当力P没有通过形心时，杆会发生弯曲，这就需要更复杂的分析。目前，我们假设所有的轴向力都是作用在横截面的形心处，除非有相反情况特别说明。同样，除非另有说明，一般也假设物体的质量是忽略的，如我们讨论图1的杆
一样。 轴向力使杆产生的全部伸长量，用希腊字母δ表示【如图1(a)】，单位长度的伸长量，或者应变，可以用等式来决定。 L是杆的总长。注意应变ε是一个无量纲的量。只要应变是在杆的长度方向均匀的，应变就可以从等式(2)中准确获得。如果杆处于拉伸状态，应变就是拉应变，代表材料的伸长或者延长如果杆处于受压状态，那么应变就是压应变，这也就意味着杆上临近的横截面是互相靠近的。 当材料的应力和应变显示的是线性关系时，也就是线弹性。这对多数固体材料来说是极其重要的性质，包括多数金属，塑料，木材，混凝土和陶瓷。处于拉伸状态下，杆的应力和应变间的线性关系可以用简单的等式来表示。E是比例常数，叫做材料的弹性模量。 注意E和应力有同样的单位。在英国科学家托马斯·杨(1773 ~ 1829)研究杆的弹性行为之后，弹性模量有时也叫做杨氏模量。对大多数材料来说，压缩状态下的弹性模量与处于拉伸时的弹性模量的一样的。 2、拉伸应力应变行为 一个特殊材料中应力和应变的关系是通过拉伸测试来决定的。材料的试样通常是圆棒的形式，被安置在测试机上，承受拉力。当载荷增加时，测量棒上的力和棒的伸长量。力除以横截面积可以得出棒的应力，伸长量除以伸长发生方向的长度可以得出应变。通过这种方式，材料的完整应力应变图就可以得到。 图1所示的是结构钢的应力应变图的典型形状，轴向应变显示在水平轴，对应的应力以纵坐标表示为曲线OABCDE。从O点到A点，应力和应变之间是