机电英语(教育部2007版)Unit 2-Telecommunications
(完整版)机电专业英语
一．单词翻译(英译汉，汉译英共20分）compound pulley 组合滑轮screw 螺丝worm gear 涡轮clearance fit 间隙配合transition fit 过渡配合interference fit 过盈配合ground teeth 精密齿gear reductions 齿轮减速比aluminum 铝brass 黄铜bronze 青铜cast iron 铸铁carbon 碳钢alloy steel 合金钢hardened steel 硬化钢stainless steel 不锈钢plastic materials 塑料材料gear teeth 齿轮straight-toothed 直齿轮rack and pinion 齿条和齿轮straight bevel gears 直齿锥齿轮spiral bevel gears 弧齿锥齿轮friction 摩擦lubrication 润滑lubricant 润滑剂full fluid film lubrication 全液态薄膜润滑boundary lubrication 边界润滑elastrohydrodynamic lubrication 流体弹性动力润滑proton 质子neutron 中子parallel circuit 并联电路series circuit 串联电路electron 电子inductor 电感capacitor 电容conductor 导体semiconductor 半导体metal-oxide-semiconductor 金属氧化物半导体integrated circuit 集成电路integrated circuit chip 集成电路芯片dopant 掺杂剂mask 掩膜doping 掺杂photoresist 感光胶etch 蚀刻法dielectric 非传导性（电介质）rung 梯级branch 分支instructions 指令power rails 母线quantity 数量parameter 参数ladder diagram 梯形逻辑图ON-delay timer 通电延时定时器OFF-delay timer 断电延时定时器retentive timer 保持定时器proximity timer 接近开关electromechanical control 机电控制mobile robots 可移动机器人manipulator robots 操作机器人self reconfigurable robots 自变形（重装）机器人Analog-to-Digital Converter A/D模数转换器Digital-to-Analog Converter D/A模数转换器ASIC(Application Specific Integrated Circuit)专用采集电路Laplace transform 拉普拉斯变换Z-transform Z变换valve 阀pump 泵motor 发动机cavitation 气穴hydraulic 液压的equilibrium position 平衡位置vibration(oscillation) 振动transducer 饱和电抗器,传感器，变频器reservoir 油箱pump with electric motor 电力马达泵unloader and safety relief valve 减荷器和安全卸压阀check valve 止回阀accumulator 蓄电池valve manifold 阀箱electronic control card 电子控制插件cylinder 汽缸hydraulic motor 液压发动机return line filter 回油阀derivative 导数displacement 位移velocity 速度acceleration 加速度peak amplitude 振幅峰值digital signal processing 数字信号处理二、汉译英（20分）1.滑轮相比机器的缺点是使用刚性物体来传递力，滑动和伸展拉紧。
Unit2Communication
拓展模块Unit 2 Communication( 综合训练)一．语音。
（）1、A. breathe B. heating C. breakfast D. meat（）2、A. stove B. mosquito C. chopstick D. local（）3、A. community B. advertise C. equip D. similar（）4、A. charge B. check C. china D. brochure（）5、A. dustbin B. suburb C. publish D. grateful二．英汉互译。
1．give a lecture____________ 2. 一双筷子_____________3. major in ________________4. 英语系_____________5. make a difference_____________6. 对……感激_____________7. get used to doing_____________ 8. 与……相似_____________9. on behalf of _____________ 10. 观点_____________11. as well _____________ 12. 尽快地_____________13. because of _____________ 14. 根据_____________15. invite sb to do sth _____________ 16. 盼望_____________17. go cycling _____________ 18. 对……感兴趣_____________19. Thank you for helping me. _______________________________.20. We are looking forward to seeing you. _______________________21.I’m writing on behalf of the English Department to invite you to give us a lecture in Changjiang Teacher’s College. _____________________________________________ 22. We would be very grateful if you could give a talk on English culture to the students of the English Department.________________________________________________________23. If you accept our invitation to give a lecture , please write back to me or call me …24. We look forward to the opportunity to learn from your experience and wisdom.25. Please let me know whether you can make it as soon as you can .三．交际用语。
[英语学习]通信英语lesson2课件
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School of Electrical and Information
English On Telecommunications
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School of Electrical and Information
Text and translation
A is X times the duration of B
已经存在
Serial data transmission systems have been around7 for a long time and are found in the telephone (human speech), Morse code, semaphore, and even the smoke signals once used by native Americans. The fundamental problem encountered by all serial data transmission systems8 is how to split the incoming data stream into individual units (i.e., bits) and how to group 单独的码元 these units into characters. For example, in Morse code the dots 字符 and dashes of a character are separated by an intersymbol space, while the individual characters are separated by an intercharacter space, which is three times the duration9 of an intersymbol space.
(完整版)机电专业英语试题及答案
《机电专业英语》考试题一．翻译词汇mechatronic 机电一体化（技术）sensor传感器actuator执行元件，执行结构Feedback反馈deviation偏差hydraulic液压的machine tool机床geometric modeling 几何建模job-lot amount单批量maintenance维护pallet随行夹具robot机器人drill钻床，钻头Lathe车床mill 铣床shaper牛头刨床planer龙门刨床grinder磨床tap攻丝pulley滑轮shaft轴bore 镗削screw螺杆tolerance公差torque转矩nut螺母spring弹簧key键bearing轴承coupling联结器clutch离合器diode二极管transistor三极管transistors 晶体管integrated circuit 集成电路chip 芯片capacitor 电容器resistor 电阻digital 数字（式）的lever杠杆Servomechanism伺服机构closed-loop闭环actuator 传动装置following device随动装置troubleshoot故障排除二．汉译英1.机电一体化技术，电子学，机械学，智能数控，机器人学，信息技术，科学术语。
Mechatronics , electronics, mechanics, intelligent control, robotics.information technology , scientific term .2.机电一体化技术广泛用于汽车工业、机械工业以及国防工业。
Mechatronics has been applying widely to auto industry, mechanical industry and national defense industry.3.大多数的机加工主要是由五种基本的机床来完成。
新职业英语基础篇第三版职业综合英语2unit2课件
新职业英语基础篇第三版职业综合英语2unit2课件全文共3篇示例，供读者参考篇1New Profession English Basics 3rd Edition Job Comprehensive English 2 Unit 2 CoursewareUnit 2: Hospitality Industry1. Objectives:- Understand key terms and concepts related to the hospitality industry- Learn about different types of hospitality jobs- Develop skills in communicating effectively in a hospitality setting2. Vocabulary:- Hospitality industry: The industry that includes hotels, restaurants, bars, and other establishments that provide services to travelers and tourists.- Guest: A person staying at a hotel or using the services of a hospitality establishment.- Front desk: The area in a hotel where guests check in and out, make reservations, and ask for information.- Concierge: A hotel employee who assists guests with various services, such as booking tickets, making restaurant reservations, and arranging transportation.- Housekeeping: The department in a hotel responsible for cleaning and maintaining guest rooms and public areas.- Room service: The service in a hotel that delivers food and beverages to guests in their rooms.- Check-in/check-out: The process of arriving at and departing from a hotel.- Amenities: Extra features and services offered by a hotel, such as a swimming pool, gym, or spa.- Hospitality skills: The skills needed to provide excellent service to guests, such as communication, problem-solving, and teamwork.3. Jobs in the Hospitality Industry:- Hotel manager: Oversees the day-to-day operations of a hotel, including staff management, guest services, and budgeting.- Front desk agent: Greets guests, checks them in and out, and provides information and assistance during their stay.- Concierge: Assists guests with booking activities, making reservations, and arranging transportation.- Housekeeper: Cleans and maintains guest rooms and public areas in a hotel.- Bartender: Prepares and serves alcoholic and non-alcoholic beverages to guests at a bar or restaurant.- Waitstaff: Takes orders, serves food and beverages, and provides excellent customer service in a restaurant.- Chef: Prepares and cooks meals in a restaurant kitchen, creating delicious dishes for guests to enjoy.- Event planner: Organizes and coordinates events, such as weddings, conferences, and parties, for clients.4. Communication Skills in the Hospitality Industry:- Greeting guests: When a guest arrives, it's important to greet them warmly and make them feel welcome.- Listening: Listening carefully to guests' needs and requests is essential for providing excellent service.- Problem-solving: Handling guest complaints and resolving issues in a timely and effective manner is key to maintaining guest satisfaction.- Teamwork: Working together with colleagues to ensure that guests receive the best possible service and experience.5. Conclusion:The hospitality industry offers a wide range of exciting and rewarding career opportunities for those who are passionate about providing excellent service to guests. By developing your communication skills, building your knowledge of the industry, and gaining experience in various hospitality roles, you can succeed in this dynamic and fast-paced field. Good luck!篇2New Professional English is a series of textbooks that are designed to improve English language skills for specific professions. The third edition of the Basic Level of New Professional English introduces students to a wide range of vocational topics and helps them develop the English language skills necessary to communicate effectively in a professional setting.One of the units in the textbook is Unit 2, which focuses on the topic of Career Paths. This unit helps students explore different career options, discuss their career aspirations, and learn vocabulary related to professions and job interviews. The lesson includes activities such as reading texts about different professions, listening to interviews with professionals, androle-playing job interviews.The lesson begins with a warm-up activity to introduce the topic of careers and get students thinking about their own career goals. This is followed by a reading activity where students learn about various professions and career paths. The students then practice using the new vocabulary in speaking activities where they discuss their own career aspirations and share information about different professions.In the listening activity, students listen to interviews with professionals from different fields and answer questions about their career paths and experiences. This helps students develop their listening skills and learn more about the realities of working in different professions.The unit concludes with a role-playing activity where students simulate job interviews and practice their speakingskills. This allows students to put into practice the vocabulary and language structures they have learned throughout the unit.Overall, Unit 2 of the New Professional English Basic Level textbook provides students with a solid foundation in English language skills related to careers and professions. By engaging in a variety of activities, students are able to improve their reading, listening, speaking, and vocabulary skills in a practical and relevant context. This prepares them for success in their chosen profession and helps them communicate effectively in a professional setting.篇3Unit 2: Telecommunications1. IntroductionThis unit focuses on the telecommunications sector, which plays a vital role in connecting people and technology. We will learn about the history and development of telecommunications, as well as the different types of communication technologies and services available today.2. Historical OverviewTelecommunications has a long history dating back to the invention of the telegraph in the 19th century. Over time, new technologies such as the telephone, radio, television, and internet have revolutionized communication. Today, we have a wide range of digital communication tools such as smartphones, social media, and video conferencing.3. Telecommunications InfrastructureTelecommunications infrastructure refers to the physical components and networks that enable communication to take place. This includes cables, satellites, towers, and data centers. The infrastructure is constantly evolving to meet the growing demands for faster and more reliable communication services.4. Types of Telecommunications ServicesTelecommunications services can be broadly categorized into three main types: fixed-line, mobile, and internet services. Fixed-line services use landlines to connect calls, while mobile services use cellular networks to enable wireless communication. Internet services allow users to access the web, send emails, and participate in online activities.5. Emerging TechnologiesThe telecommunications sector is constantly evolving with the introduction of new technologies such as 5G, IoT (Internet of Things), and AI (Artificial Intelligence). These technologies are shaping the future of communication by offering faster speeds, greater connectivity, and improved efficiency.6. Career OpportunitiesThere are numerous career opportunities in the telecommunications sector, including network engineers, software developers, data analysts, and customer service representatives. As technology continues to advance, the demand for skilled professionals in this field is expected to grow.7. ConclusionThe telecommunications sector is a dynamic and fast-paced industry that is constantly evolving to meet the demands of modern communication. By understanding the history, infrastructure, services, and emerging technologies in telecommunications, we can prepare ourselves for a successful career in this exciting field.。
机电专业英语教案
A:Do you remember what EMF is?
B: It's short for electromotive force.
A: Pardon me? Would you explain it in detail?
B: I'm sorry. I have no time right now. Look it up in the next, I believe you will find the answer.
教学时间：
教学班级：
教学内容：
I.专业词汇
resistance阻力，电阻impede阻力，阻碍
represent描绘，代表ohm欧姆
element要素，元件resistor电阻器
thermistor热敏电阻diode二极管
series串联parallel并联
die渴望，死亡in unit of以...为单位
4. The formula I= , where I means current in amperes.
IV.对话
A: Excuse me, Peter?
B: Yes, Roger?
A: Could you tell me the unit of current?
B: Sure, the unit of current is ampere.
B: Well, a network can be regarded as a combination of more than one circuit.
A: Oh, I think I got it. Thanks.B: You're welcome.
作 业
会读认知新的专业词汇和术语。
机电专业英语(第2版)教学指南(中等职业学校教学用书)
中等职业学校教学用书（机电技术专业）
机电专业英语（第2版）
教学指南
杨春生主编
Publishing House of Electronics Industry
北京•BEIJING
前言
为了配合《机电专业英语（第2版）》课程的教学，体现教材的编写特色，更好地为读者服务，编写了此教学资料。
教学资料内容有三个部分：第一部分是教学指南，包括了课程性质与任务、课程教学目标和教学时间分配。
第二部分是教材补充资料。
教师可以根据不同的教学要求按需选取和重新组合。
第三部分是习题答案，给出了每道习题的解答过程。
限于编著者水平，教学资料中有错误或不妥之处，请读者给予批评指正。
编者
2008年11月
《机电专业英语（第2版）》教学指南
一、课程性质和任务
本课程是一门延续公共英语的专门课。
其任务是增加学生的专业词汇量，提高学生理解和翻译机电类英文专业资料的能力，扩大学生的专业知识面。
二、课程教学目标
１．具有400~500的专业词汇量
２．掌握基本语法知识，具有笔译本专业英文资料的初步能力
３．具有用英语与外国工程技术人员进行简单技术交流的能力
４．具有读懂机电设备的英文操作手册的能力
５．具有用英语自荐和填写各类英文表格的基本能力
三、课时分配表
注：各学校的专业英语课时有所差别，一般在32学时左右，制定授课计划时教师可根据不同专业对各模块的课进行选择组合，每课按2学时计。
Unit 2 Some Rules for Mechanical Design 机电专业英语 图文课件
Text & Translation
The following tips may be helpful in stimulating creative ideas of the designers.
（1）Apply ingenuity to utilize desired physical properties and to limit undesired ones. ［3］The performance requirements of a machine are met by utilizing laws of nature or properties of matter (e.g.， flexibility，strength，gravity，inertia，buoyancy，centrifugal force， principles of the lever and inclined plane，friction，viscosity，fluid pressure，and thermal expansion)，also the many electrical，optical， thermal，and chemical phenomena. However，what may be useful in one application may be detrimental in the next. For example，flexibility is desirable in valve springs but not in the valve camshaft；friction is desirable at the clutch face but not in the clutch bearing. Ingenuity in design should be applied to utilize and control the physical properties that are desirable and to minimize those that are not desirable.
信息类专业英语第二章
Unit Two Telecommunications
B.Strowger invented the first two-motion step-by-step switch. In a step-by-step switch, a call was established and routed in a set of progressive electromechanical steps, each under the direct control of the user’s dialing pulses. It remained as the workhorse of central office switching well into the 1970s. The first crossbar switch was used in 1932 in Sweden. The Bell System introduced the No.1 Crossbar System in 1938. Crossbar switching was carried out by a special circuit called a marker, which provided common control of number entry and line selection for all calls.[2]
表21通信网发展的四个阶段电话数字网数据网综合数字网年代十九世纪八十年代六十年代七十年代八十年代业务类型话音业务类型话音话音话音数据数据话音话音数据图像图形等数据图像图形等交换技术电路交换电路交换分组交换电路分组和快速分组交换模拟数字传输媒体铜线微波铜线微波铜线微波铜线微波卫星光纤卫星卫星unittwotelecommunicationskeywordstelecommunication电信讯无线电通讯telephony电话学通话switchboard电话交换台electromechanical机电的电动机械的dialingpulse拨号脉冲crossbar纵横交叉analog模拟模拟量radiorelaytransmission无线电中继传输highfrequencyhf高频veryhighfrequencyvhf甚高频ultrahighfrequencyuhf超高频repeater转发器中继器microwave微波的quadrature正交90相位差??unittwotelecommunicationsquadratureamplitudemodulationqam正交幅度调制storedprogramcontrolspc存储程序控制pulsecodemodulationpcm脉冲编码调制hierarchy分层层次terminal终端终端设备protocol协议草案compatibility兼容性相容性compatibility兼容性相容性interconnect相互连接互连opensysteminterconnectionosi开放系统互连localareanetworkslans局域网cellular蜂窝状的格形的多孔的spectrum频谱subscriber用户copper铜unittwotelecommunicationsconvergeon集中于聚集在
高教高职版ESP机电英语(第二版)教案
iContents++++++++Unit 1 Modern Design andManufacturing 1•••Reading and TranslatingReading A CAD/CAMReading B AutoCAD’s Main MenuSimulated Writing — Commercial Correspondence Listening and Speaking — Fair and Exhibition116813Unit 2 Telecommunications 18•••Reading and TranslatingReading A 3GReading B SIM CardSimulated Writing — Fax and E-mailListening and Speaking — Inquiry1818222428Unit 3 Building Service 33•••Reading and TranslatingReading A Fire Alarm SystemReading B Invitation for Bids of Passenger LiftsSimulated Writing — Letter of CreditListening and Speaking — Offer and Counter-Offer3333373844Unit 4 Motor Vehicles 50ii• • •Listening and Speaking — Packing and Shipment60Unit 5 Printing Equipment 65Reading and TranslatingReading A The Battery BusReading B Specifications of Auto Test InstrumentSimulated Writing — Commercial Invoice50 50 55 56 • • •Reading and TranslatingReading A Preventive MaintenanceReading B Heidelberg Print Media CenterSimulated Writing — Bill of Exchange Listening and Speaking — Payment65 65 69 71 74Unit 6 Electric Engineering 78• • •Reading and TranslatingReading A Electric MotorsReading B UPDG and Its ApplicationsSimulated Writing — Bill of LadingListening and Speaking — Contract Negotiation78 78 82 83 88Unit 7 Automation93• • •Reading and TranslatingReading A Industrial RobotReading B Equipment Importing and Personnel Training On Importing Machinery and EquipmentSimulated Writing — Certificate of Origin Listening and Speaking — Agency 93 93 97 99105Unit 8 Air-Conditioning 111• • •Reading and TranslatingReading A Central Station Air Conditioning Systems Reading B Safety Precautions (Please Observe at All Times)Simulated Writing — Insurance PolicyListening and Speaking — Advertising and Sales Promotion111111115117121Unit 9 Numerical Control127iii• • •Reading and TranslatingReading A Voice NC Programming Reading B Laser as a T oolSimulated Writing — Sales ContractListening and Speaking — Setting up a Jo138Unit 10 Home Appliance143int Venture 127127131133• • •Reading and TranslatingReading A Interactive TelevisionReading B Operating Instructions of Digital Video Camera RecorderSimulated Writing — Right & Interest Assignment Listening and Speaking — T echnology Transfer and Cooperation143143 147150155Glossary 160参考答案181参考译文209Part 1response of mechanisms, heat-transfer calculations, and numericalcontrol part programming. Thecollection of application programswill vary from one user firm to thenext because their product lines,manufacturing processes, and2E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n g2. What can CAM be used for?3. What are the functions of computers in CAM?customer markets are different. Thesefactors give rise to differences in CAD system requirements.Computer-aided manufacturing (CAM) can be defined as the use of computer systems to plan, manage, and control the operations of a manufacturing plant through either direct or indirect computer interface with the plant’s production resources. As indicated by the definition, the applications of computer-aided manufacturing fall into two broad categories: 1. Computer monitoring and control. 2. Manufacturing support applications. The distinction between the two categories is fundamental to an understand-ing of computer-aided manufacturing.In addition to the applications involving a direct computer-process interface for the purpose of process monitoring and control, computer-aidedUnit 1Modern Design and Manufacturing 3manufacturing also includes indirect applications in which the computerserves a support role in the manufacturing operations of the plant. In theseapplications, the computer is not linked directly to the manufacturing process.Instead, the computer is used “off-line” to provide plans, schedules, forecasts,instructions, and information by which the firm’s production resources can bemanaged more effectively. The form of the relationship between the computerand the process is represented symbolically in the figure given below. Dashedlines are used to indicate that the communication and control link is an off-lineconnection, with human beings often required to consummate the interface.However, human beings are presently required in the application either toprovide input to the computer programs or to interpret the computer outputand implement the required action.CAM for manufacturing supportN EW W ORDS AND E XPRESSIONScategory /5kAtI g ErI/ n.分类component /kEm5pEJnEnt/ n.部分，配件，部件consummate /5k S nsQmeIt/ v.使圆满，使完成define /dI5faIn/ v.界定，给…下定义digital /5dIdVItl/ a.& n.数字(的)distinct /dI5stINkt/ a.清楚的distinction /dI5stINkFEn/ n.区别，差别dynamic /daI5nAmIk/ a.动力的；动态的effectively /I5fektIvlI/ ad.有效地facilitate /fE5sIlIteIt/ v.使容易，使便利，促进implement /5ImplImEnt/ v.实现；执行input /5Input/ v. & n.输入integrate /5IntI5greIt/ v.使完整，使一体化integration /IntI5greIFEn/ a.一体化interface /5IntEfeIs/ n.界面，接口interpret /In5tE:prIt/ v. 解释，说明4keyboard /5ki:5bR:d / n.键盘modification /m S dIfI5keIFEn / n. 修改，更改 off-line /5S f laIn / ad.脱机 optimization /S ptImaI5zeIFEn / n.最佳化，优化 output /5aJtpJt / v. & n. 输出E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n gstrain /streIn / n.应变 stress /stres / n.压力，应力 symbolically /sIm5b S lIkElI / ad. 象征性地 terminal /5tE:mInl / n. 终端ultimately /5QltImItlI / ad. 最后，最终；最重要的是 give rise to引起，使发生 move in the direction of 朝…方向移动/发展 provide for 提供Check Your UnderstandingI. Mark the following statements with T (true) or F (false) according to the passage.1. CAD/CAM is concerned with the use of digital computers to perform certain functions in designand production.2. CAD/CAM does provide the technology base for the computer-integrated factory now.3. The computer systems perform specialized design functions only with the software provided.4. The CAD software facilitates the engineering functions of the user firms.The collection of application programs will never change.6. The CAD system requirements change with the customer markets.7. The distinction between CAM’s two categories is not important to the understanding of CAM.Unit 1Modern Design and Manufacturing 58. The firm’s production resources can be managed more effectively with the indirect applicationof CAM.II. Give brief answers to the following questions.1. What will CAD/CAM provide for the computer-integrated factory of the future?___________________________________________________________________2. What does the CAD hardware typically include?___________________________________________________________________3. Why will the collection of application programs vary?___________________________________________________________________4. Can CAM control the operation of a manufacturing plant through the indirect computer interface?___________________________________________________________________5. What is fundamental to the understanding of CAM?___________________________________________________________________6. Besides providing input to the computer programs, what else can human beings do in the application?___________________________________________________________________Build up Your VocabularyIII. Match the items listed in the following two columns.1. software a. programs opposed to system ones2. user firm b. company which applies CAD/CAM to production3. application programs c. the programs used to direct the operation of a computer4. numerical control d. an arrangement of machines or sequence of operationsinvolved with a single manufacturing operation5. product lines e. control of a machine tool, or other devices in a manufacturingprocess by a computer6. manufacturing plant f.factory where many things are produced7. computer interface g.devices or programs designed to link one system toanother8. off-line h.the act or process of computing the removed heat9. output rmation in a form suitable for transmission frominternal to external units of a computer10. heat-transfer calculations j.operating independently of an associated computerIV. Fill in the table below by giving the corresponding translation.6E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n gEnglishChinesegraphics display terminals键盘 peripheral equipment硬件 stress-strain analysis应用程序 computer monitoring and control动态响应 computer interface优化设计V. Complete the following sentences by translating the Chinese given in the brackets.1. This technology is moving _______________________________ (正朝着更广泛的应用方向发展).(in the direction of)2. CAD/CAM will _______________________________ (为未来的计算机集成工厂提供技术基础). (provide for)3. The computer systems __________________________________________(由硬件和软件构成).4. The class _______________________________________________ (年龄从15岁到18岁不等). (vary from … to …)5. He decided ________________________________________(要么修好这台电脑，要么买台新的).6. This computer ______________________________________ (并没有与制造过程直接连在一起). (be linked to)■ Reading BAutoCAD ’s Main MenuAUTOCAD ®Main Menu 0. Exit AutoCAD 1. Begin a NEW drawing 2. Edit an EXISTING drawing 3. Plot a drawing 4. Printer Plot a drawing 5. Configure AutoCAD 6. File Utilities7. Compile shape/font description fileUnit 1Modern Design and Manufacturing78. Convert old drawing file9. Recover damaged drawingEnter selection:Here’s a listing of what each main menu selection does.Option 0 (Exit AutoCAD) gets you back to the operating system.Options 1 (Begin a NEW drawing) and 2 (Edit an EXISTING drawing) are where you create, edit and store your drawings in AutoCAD.Options 3 (Plot a drawing) and 4 (Printer Plot a drawing) are where you can print and plot your drawings.Option 5 (Configure AutoCAD) steps you through AutoCAD’s interactive utility to let the CAD program know what hardware you are using.Option 6 (File Utilities) lets you perform disk file maintenance operations just as if you were using the operating system.Options 7 (Compile shape/font description file) and 8 (Convert old drawing file) are special situations and will not be covered in this article. See CUSTOMIZING AutoCAD (New Riders Publishing) or the AutoCAD Reference Manual for details.Option 9 (Recover damaged drawing) is for salvaging a drawing file in which AutoCAD detects an error and will not load.N EW W ORDSAutoCAD 计算机辅助绘图软件configure /kEn5fI g E/ v.配置detect /dI5tekt/ v.发现，探知interactive /IntE5AktIv/ a.互动的，交互的maintenance /5meIntInEns/ n.维修，保养plot /pl S t/ v.规划，绘制salvage /5sAlvIdV/ v.抢救，挽救utility /j u:5tIlItI/ n.实用，效用，(复)设施I. Translate the following phrases into Chinese.1. main menu2. operating system3. begin a new drawing4. edit an existing drawing5. recover damaged drawing6. configure AutoCAD7. perform disk file maintenance operations88. interactive abilityII. Give brief answers to the following questions.1. Which selection do you have to enter if you want to return to the operating system? __________________________________________________________________2. Where do you think you will probably spend most of your AutoCAD hours?E n g l i s h f o r M e c h a n i c a l & E l e c t r i c a l E n g i n e e r i n g__________________________________________________________________ 3. Which selection do you need to enter if you feel it necessary to modify an existing drawing? __________________________________________________________________ 4. What should you do every time you want to create a new drawing?__________________________________________________________________ 5. How can you print your drawings?__________________________________________________________________ 6. What is the function of Option 9?__________________________________________________________________III. Translate the following sentences into Chinese.1. The drawing editor is the AutoCAD equivalent (相等物) to your drafting board.__________________________________________________________________2. Option 6 lets you perform disk file maintenance operations just as if you were using the operating system.__________________________________________________________________ 3. Options 1 and 2 are where you create, edit and store your drawings in AutoCAD. __________________________________________________________________ 4. If you have exited to the operating system, start up AutoCAD again by typing \IA. __________________________________________________________________Part 2Simulated WritingCommercial Correspondence在现代涉外贸易中，商业函件(Commercial Correspondence)是人们普遍采用的业务联络方式。
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3G
PARAGRAPH 1
The mobile communication industry has evolved in three stages: Analog, Digital and Multimedia stage.
移动通讯业的发展经历了三个阶段，即模拟、数码和多媒体阶段。
过去，由于数据传输速度的局限性，几项移动网络无法 实现的新应用借助于3G成为现实。
PARAGRAPH 8
These applications range from web browsing to file transfer to home automation-- the ability to remote access and control in house appliances.
PARAGRAPH 1
They are the three generations of mobile phones, with each successive generation more reliable and flexible than the last.
它们也是移动电话发展的三个时代，每一代都比上一代具有更高的可靠性和更大的 灵活性。
PARAGRAPH 2
First, analog cellular could easily be used to make voice transmit and (it is used) typically only in one country.
首先，模拟式蜂窝电话可以轻易地进行声音传送，尤4G还没有达到3G或卫星系统的覆盖率。
Envisage:To conceive an image or a picture of, especially as a future possibility
PARAGRAPH 8
However, it will have to include such a concept as simple as that: if a customer can do it at home or in the office while wired up to the Internet, that customer must be able to do it wirelessly in a fully mobile enviroment.
其次，数码移动电话系统在许多国家除了提供有声通讯服务外，还增加了低速数 据服务，如短信服务。
PARAGRAPH 3
Following on the heels of analog and digital technology, multimedia services add high speed data transfer to mobile devices, allowing audio, video, graphic and other applications, even TV programs and the Internet to be accessed through a mobile terminal.
高速。数据传输速度取决于通话环境。有了3G技术，就可以实现信息 数据以Mbps（兆比特每秒）的速度高速传输。
PARAGRAPH 7
For high mobility, data rates of 37 Mbps have been available in China.
在高速移动通讯方面，中国已经实现了没面37兆比特的传输速度。
PARAGRAPH 2
Then, digital mobile phone systems add low data-rate service like short message service(SMS) besides voice communications in many countries.
紧随模拟和数码技术之后，多媒体服务为移动电话业务增加了高速数据传 输功能，使得音频、视频、图文和其他应用，甚至电视节目和互联网可以 接入到移动电话终端。
PARAGRAPH 3
Finally, based on CDMA technology, a common standard for mobile multimedia called the Third Generation (3G) has arrived.
游戏拼版在由生产厂家运送到游戏使用者手中的过程中混在一起。
PARAGRAPH 4
When the recipient empties the bag with all the pieces, they are reassembled to form the original image.
收货人从胶袋中倒出所有的小图板之后，图板又被重新拼回原来的图案。
最终，在码分多址（CDMA）无线通讯技术的基础上，一个移动通讯多 媒体通用标准，即3G诞生了。
PARAGRAPH 4
Packet everywhere With 3G, the information is split into seperate but related packets before being transmitted and reassembled at the receiving end.
然而，它将蕴涵这样的理念，简而言之，就是：倘若一个用户能够在家 中或办公室里通过有线手段进入互联网，那么他也必将能够通过无线手 段在完全的移动通讯环境下实现这一点。
PARAGRAPH 6
High speed The data transmission rates depend upon the enviroment which the call is being made in. Speeds of up to Megabits per second (Mbps) are achievable with 3G.
PARAGRAPH 5
Internet everywhere The World Wide Web has become the primary communication interface already.
网络无处不在。 万维网已经成为主要的通讯界面。
PARAGRAPH 5
People access the Internet for entertainment and information collection, the intranet for accessing company information and connecting with colleagues and the extranet for accessing customers and suppliers.
信息包交换的过程类似于一个益智拼图游戏。该游戏中的图案在生产厂家被分解为 许多拼合小图并装入胶袋。
PARAGRAPH 4
During transportation of the boxed jigsaw from the factory to the end user, the pieces get jumbled up.
信息包无处不在。有了3G技术，信心在传输前被分解为独立而有相关的信 息包，在接收端再重新组合。
PARAGRAPH 4
Packet switching is similar to a jigsaw puzzle. The image that the puzzle represents is divided into pieces at the manufacturing factory and put into a plastic bag.
这些新应用涉及网络浏览、文件传输以及居家自动化。 居家自动化技术可以使人们远程接入和遥控住宅设施。
PARAGRAPH 8
Nowadays, a new generation in some special area has arrived silently through Wi-Fi and the 802.11 series of standards, which is so-called the Fourth Generation (4G).
如今，借助于无线保真（Wi-Fi）he 802.11无线频段系列标准，一个新生代在某 些领域已经悄然而至。这就是所为的4G。
PARAGRAPH 8
4G as currently envisaged hasn't attained the coverage of 3G or of satellite systems yet.
PARAGRAPH 8
3G facilitates several new applications that have not previously been available over mobile networks due to the limitations in data transmission speeds.
人们通过互联网可以得到娱乐和收集信息。通过企业内部网可以获取公司信息 和与同事沟通。通过企业外部网可以联络客户和供货商。
PARAGRAPH 5
Web browsing is a very important application for packet data.
网络浏览是信息包数据一项非常重要的应用。