机械工程专业外语试卷
机械英语试题及答案解析
机械英语试题及答案解析一、选择题（每题2分，共20分）1. What is the term for the process of removing material froma workpiece to create a part?A. MachiningB. WeldingC. CastingD. Forging答案：A2. Which of the following is a type of metal cutting operation?A. DrillingB. SolderingC. BrazingD. Annealing答案：A3. The term "CNC" stands for:A. Computer Numerical ControlB. Closed Network CircuitC. Centralized Network CommunicationD. Continuous Numerical Calculation答案：A4. What is the primary function of a lathe?A. To shape woodB. To cut threads on a workpieceC. To bend metal sheetsD. To forge metal答案：B5. In the context of manufacturing, what does "CAD" refer to?A. Computer Aided DesignB. Computer Aided DraftingC. Computer Aided DevelopmentD. Computer Aided Diagnosis答案：A6. Which of the following is a common material used in the production of machine parts?A. PlasticB. CeramicC. AlloyD. Glass答案：C7. The process of joining two pieces of metal by heating them to their melting point is known as:A. SolderingB. BrazingC. WeldingD. Gluing答案：C8. What is the role of a milling machine in the manufacturing process?A. To cut internal threadsB. To shape the surface of a workpieceC. To drill holesD. To create a smooth finish on a surface答案：B9. The term "tolerance" in mechanical engineering refers to:A. The maximum weight of a partB. The acceptable variation in size or shape of a partC. The minimum strength of a materialD. The standard size of a part答案：B10. What is the purpose of a jig in manufacturing?A. To hold workpieces in place during machiningB. To measure the dimensions of a partC. To cut threads on a workpieceD. To provide power to a machine tool答案：A二、填空题（每空1分，共10分）11. The process of shaping metal by applying pressure is known as _______.答案：Forging12. A _______ is a tool that holds a cutting tool and guides it through a specific path.答案：Cutter13. In machining, the term "feed rate" refers to the _______ of the tool relative to the workpiece.答案：Speed14. The _______ is a device that can be used to measure the internal diameter of a hole.答案：Micrometer15. The process of hardening a metal to increase its strength is called _______.答案：Quenching16. A _______ is a machine tool used for shaping a workpiece by removing material.答案：Milling Machine17. The _______ is the process of cutting a workpiece along a straight line.答案：Sawing18. The _______ is a type of machine tool used for cutting internal threads.答案：Tapping Machine19. The _______ is the process of heating and cooling a metalto alter its physical properties.答案：Heat Treatment20. A _______ is a device that holds a workpiece in place during machining.答案：Vise三、简答题（每题5分，共10分）21. Explain the difference between a milling machine and a lathe.答案：A milling machine is used for shaping the surfaceof a workpiece by removing material with a rotating multi-toothed cutter, whereas a lathe is used for shaping a workpiece by rotating it and cutting it with a stationary tool.22. What is the purpose of a jig in the manufacturing process?答案：A jig is a device used in manufacturing to hold a workpiece in a specific position while it is being machined, ensuring accuracy and repeatability in the production process.四、论述题（每题15分，共15分）23. Discuss the importance of precision in mechanical engineering and how it affects the performance of a machine.答案：Precision in mechanical engineering is crucial asit ensures that components fit together correctly andfunction as intended. Inaccurate parts can lead to poor performance, increased wear, and even failure of the machine. Precision is achieved through the use of。
《机械工程专业英语》测试题(18-22)含答案
《机械工程专业英语》测验题(18-22)将下列词组译成汉语the base circle（基圆）the pitch curve（啮合曲线）the contact force（接触力）the intermittent motion（间歇运动）the common normal（公法线）the conjugate profiles（共轭齿廓）the cycloidal profiles （摆线齿形）the involute profiles（渐开线齿形）the spur gear（直齿轮）the herringbone gears（双螺旋齿轮）the face gear（端面齿轮）the radial distance（径向距离）the addendum circle（齿顶圆）The tooth thickness（齿厚）the tooth space（齿间隙）the cap screws（螺钉）the setscrews（固定螺丝钉）the engineering graphics（工程力学）mechanical design（机械设计）the installation techniques（安装技术）the bolted joint（螺栓连接）the hardened washers（强化垫圈）the fatigue resistance（抗疲劳强度）the modulus of elasticity（弹性模量）the antifriction bearing（减摩轴承）the rolling bearing（滚动轴承）the rolling contact （滚动接触）the sliding contact（滑动触电）the corrosion resistance（抗腐蚀性）the machining tolerances（加工公差）the fatigue loading（疲劳载荷）the radial loads（径向负荷）the thrust loads逆负荷the ball bearing球轴承the roller bearing滚子轴承the single-row bearings单沟轴承the double-row bearing双沟轴承the needle bearing滚针轴承the bearing life轴承寿命The rating life额定寿命the axis of rotation旋转轴The helix angle螺旋角a right-hand helix 右旋a left-hand helix左旋an involute helicoids螺旋面an involute curve渐开线the shaft centerlines轴中心线worm gear蜗轮the hypoid gear准双曲面齿轮right angle直角worm gearing蜗杆传动the lead angle导角shaft angle轴线角度bending load弯曲载荷tension load张力负荷compression load压缩负载torsional load扭转负荷the bending moment弯矩the bending stress弯曲应力the shot peening喷丸法the actuating force工作力the coefficient of friction摩擦系数An electromagnetic coil电磁线圈the magnetic circuit磁路将下列短语译成汉语disk or plate translating (two-dimensional or planar) 盘形传动凸轮（两维的，即平面的）cylindrical (three-dimensional or spatial) cams圆柱形凸轮（三维的，即空间的）机构a radial (in-line) translating roller follower一个对心直动滚子从动件a constant angular velocity ratio旋转角速度的比例a constant torque ratio一个恒转矩比Nonlinear angular velocity ratios非线性角速度比率the parallel helical gear平行斜齿轮the crossed helical gear交叉斜齿轮the straight bevel gear直锥齿轮the spiral bevel gear弧齿锥齿轮the skew bevel gear大角度斜交锥齿轮the hexagon head screws六角头螺钉the fillister head screws槽头螺钉the flat head screws 平头螺钉the hexagon socket head screws内六角沉头螺钉。
机械工程英语试题及答案
机械工程英语试题及答案一、单项选择题（每题2分，共20分）1. The term "mechanical engineering" refers to the field of study that involves the application of principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems.A. TrueB. False答案：A2. Which of the following is not a sub-discipline of mechanical engineering?A. RoboticsB. ThermodynamicsC. Civil EngineeringD. Materials Science答案：C3. The process of converting a design into a physical object is known as:A. PrototypingB. DesignC. AnalysisD. Manufacturing答案：D4. In mechanical engineering, what does the acronym "CAD" stand for?A. Computer Aided DesignB. Computer Aided DraftingC. Computer Aided DevelopmentD. Computer Aided Drawing答案：A5. What is the primary function of a bearing in a mechanical system?A. To reduce frictionB. To increase frictionC. To absorb shockD. To generate heat答案：A6. The study of heat transfer, thermal energy storage, and the effects of temperature on materials is known as:A. ThermodynamicsB. Fluid MechanicsC. Heat TransferD. Materials Science答案：C7. What is the SI unit for power?A. WattB. JouleC. NewtonD. Pascal答案：A8. A gear system that uses two or more gears to transmit motion and force is called:A. GearboxB. Pulley systemC. Cam mechanismD. Lever system答案：A9. In mechanical engineering, what does the term "stress" refer to?A. Force per unit areaB. Strain per unit forceC. Force per unit volumeD. Strain per unit volume答案：A10. Which of the following is a type of energy storage device used in mechanical systems?A. SpringB. BatteryC. CapacitorD. Inductor答案：A二、填空题（每题2分，共20分）1. The ________ of a material is its ability to resist deformation under applied force.答案：stiffness2. The ________ of a material is its ability to resist breaking under stress.答案：strength3. In a four-stroke internal combustion engine, the ________ stroke is where the fuel-air mixture is compressed.答案：compression4. A ________ is a mechanical device that converts rotational motion into linear motion.答案：screw5. The ________ of a system is the total energy required to produce the system.答案：embodied energy6. A ________ is a type of simple machine consisting of a wheel and a rope wrapped around it.答案：pulley7. The ________ of a system is the energy required to operate the system over its lifetime.答案：operational energy8. A ________ is a type of energy storage device that uses the elastic properties of materials to store energy.答案：spring9. The ________ of a material is its ability to resist deformation under stress.答案：ductility10. A ________ is a type of energy storage device that uses the potential energy of a raised mass to store energy.答案：gravity storage system三、简答题（每题10分，共40分）1. Explain the difference between static and dynamic equilibrium in mechanical systems.答案：Static equilibrium refers to a state where all forces and moments acting on a system are balanced, resulting in no acceleration. Dynamic equilibrium occurs when the net force and net moment on a system are zero, allowing the system to move with constant velocity.2. Describe the function of a flywheel in a mechanical system. 答案：A flywheel is a rotating mechanical device that stores rotational kinetic energy. It smooths out fluctuations in the power delivery of an engine or motor, providing a moreconstant output.3. What is the purpose of a heat exchanger in a mechanical system?答案：A heat exchanger is a device used to transfer heat between two or more fluids without mixing them. Its purposeis to either cool a hot fluid or heat a cold fluid, improving the efficiency of the system.4. Explain the concept of a control system in mechanical engineering.答案：A control system in mechanical engineering is a system that regulates the behavior of other systems or processes. It uses feedback to compare the actual output with the desired output and makes adjustments to minimize the difference, ensuring the system operates as intended.。
机械专业英语试题及答案精编WORD版
机械专业英语试题及答案精编W O R D版IBM system office room 【A0816H-A0912AAAHH-GX8Q8-GNTHHJ8】学院院长（系主任）（签字）C. degradation…corrosionD. corrosion… degradation12. Most frames _______ cast iron, weld steel, composition, or concrete.A. are made fromB. are made up ofC. was produced byD. was consist of13. Rotating shafts particularly those that run at high speeds, must be designed toavoid operationat speeds.A . lowB .overload C. critical D. hollow14. Although cast iron is a fairly cheap material, each casting requires a .A. patternB. modelC. moldD. patent15. The term is used to describe joints with surface contact, as with a pin surrounded by a hole.A. high pairB. low pairC. surface pairD. rotary pair二、完型填空（在每个小题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计15分）The term shaft usually refers to a relatively long member of round cross section that rotates and transmits power. One or more members such as gears,sprockets, pulleys, and cams are usually (16) to the shaft by means of pins, keys, splines, snap rings, and other devices. These latter members are among the “associated parts” considered in this text, as are couplings and universaljoint, which serve to (17) the shaft to the source of power or load.考生注意：考试时间 120 分钟试卷总分 100 分共 5 页第 1 页Sometimes members like gears and cams are made (28) with shaft,but more often such members (which also include pulleys,sprockets, etc)are made separately and then(29) shaft. Theportion of the mounted member in contact with the shaft is thehub. Attachment of the hub to the shaft is made in variety ofways. A gear can be gripped (30) between a shoulder on the shaftand a spacer, with torque being transmitted through a key. Thegrooves in the shaft and hub into which the key fits are calledkeyways.16、 A) cement B) attached C) connected D)concrete17、 A) endure B) transmit C) serve D)connect18、 A) support B) meet C) satisfy D) strong19、 A) aims B) idler C) terminal D) tomb20、 A) due to B) weather C) whether D) for21、 A) elasticity B) torsional C) inertia D)acceleration22、 A) subjected B)…connect C) and D) From23、 A) deeply B) strength C) clearly understandD) long time24、 A) identify B) cross C) round D) 订线read as follows.Engineering design is the process of devising a system, component, or process to meet desired needs. It is decision making process(often iterative),in which the basic sciences, mathematics, and engineering sciences are applied to convert resourcesoptimally to meet a sated objectives and criteria, synthesis, analysis,construction ,testing, and evaluation. The engineering design component of a curriculum must include most of the following features : development of student creativity, use of open-ended problem statement and use of modern design theory and methodology, formulation of design problem statement and specification, consideration of alternative solutions, feasibility considerations, production process, concurrent engineering design, and detailed system descriptions. Further, it is essential to include a variety of realistic constraints such as economic factors, safety, reliability, aesthetics, ethics, andsocial impact.31、what’s the main meaning of message (1)?A) Engineering design is a systematic process B) materials engineer’s mainworkC) mechanical engineer’s has good idea D) electrical engineer’ mainduty32、In the author’s opinion, the design process is very complex and should takeninto account many factors, from the message who should NOT join into the design team _______.A) environmentalists,B) sociologistsC) engineersD) Government officials33、From the message, we can know the meaning of words “ABET”(at line third paragraph) is _____.A) a set of accredits standardB) a kind of design methodC) a department of US government which responsible for engineering designD) A set of law34、It can be concluded from the passage that in the exercise and training of student, which character of the following is NOT included in the curriculum ______.A) creativityB) new materialC) ethicsD) economic factors35、The title of the message is ______.A) the roles of engineers in manufacturingB) the importance of mechanical designC) engineering designD) The process of machine designTEXT 2Working drawings are the complete set of standardized drawings specifying the manufacture and assembly of a product based on its design. The complexity of the design determines the number and types of drawings. Working drawings may be on more than one sheet and may contain written instructions called specifications.Working drawings are blueprints used for manufacturing products. Therefore, the set of drawings must:(a) completely describe the parts, both visually and dimensionally;(b)show the parts in assembly;(3)identify all the parts; and (4)specify standard parts. The graphics and text information must be sufficiently complete and accurate to manufacture and assemble the product without error.共 5 页第 2 页(1) Detail drawings of each nonstandard parts.(2) An assembly or subassembly drawing showing all the standard and nonstandard parts in a single drawing.(3) A bill of materials (BOM).(4) A title block.A detail drawing is a dimensioned, multiview drawing of a single part, describing the part’s shape, size, material, and surface roughness, in sufficient detail for the part to be manufactured based on the drawing alone. Detail drawings are produced from design sketches or extracted from 3-D computer models. They adhere strictly to ANSI standards and the standard for the specific company, for dimensioning, assigning part numbers, notes, tolerances, etc.In an assembly, standard parts such as threaded fasteners and bearings are not drawn as details, but are shown in the assembly view. Standard parts are not drawn as details because they are normally purchased, not manufactured, for assembly.For large assemblies or assembled with large parts, details are drawn on multiple sheets, and a separate sheet is used for the assembly view. If the assembly is simple or the parts are small,detail drawings for each part of an assembly can be placed on a singlesheet.TEXT 3One principle aim of kinematics is to create (design) the desired motions of the subjects’ mechanical parts and then mathematically compute the positions, velocities, and accelerations, which those will create on the parts. Since, for most earthbound mechanical systems, the mass remains essentially constant with time, defining the accelerations as a function of time then also defines the dynamic forces as a function of time. Stresses, in turn, will be a function of both applied and inertial (ma) forces. Since engineering design is charged with creating systems which will not fail during their expected service life, the goal is to keep stresses within acceptable limits for the materials chosen and the environmental conditions encountered. This obviously requires that all system forces be defined and kept within desired limits. In machinery, the largest forces encountered are often those due to the dynamics of the machine itself. These dynamic forces are proportional to acceleration, which brings us back to kinematics, the foundation of mechanical design. Very basic and early decision in the design process involving kinematic principles can be crucial to the success of any mechanical design; a design which has poor kinematics will prove troublesome and perform badly.Any mechanical system can be classified according to the number of degree of freedom (DOF) which it processes. The system’s DOF is equal to the number of independent parameters which are needed to uniquely define its position in space at any instant of time.A rigid body free to move within a reference frame will, in the general case, has complex motion, which is a simultaneous combination of rotation and translation. In three-dimensional space, there may be rotation about any axis and also simultaneous translation which can be resolved into components along three axes. In a plane, or two-dimensional space, complex motion becomes a combination of simultaneous rotation about one axis (perpendicular to the plane) and also translation resolved into components along two axes in the plane41、Kinematics research focus on the following EXCEPT ______..A) accelerations B) forceC) positions, D) velocities42、From the passage that for the design engineer the first and most important is____A) the service life of a machine B) the materials chooseC) the degree of freedom D) kinematic principles43、An mechanical system has uniquely defined position in space at any instant of time that ___.A) It should has one DOFB) It should Has two DOFC) the DOF and the number of independent parameters should equalD) It should has any DOF as want44、 which one of the following is NOT TRUE _______?.A) A rigid body free to move in three-dimensional space may rotation about anyaxisB) A rigid body free to move in three-dimensional space is a simultaneouscombination of rotation and translationC) A rigid body free to move in three-dimensional space can be resolved intocomponents along three axesD) A rigid body free to move in three-dimensional space may has complex motion45、The best title for this passage would be _______.A) kinematics B) dynamicsC) kinematics and dynamic D) the important of kinematics共 5 页第3 页1．将下列英语句子译成汉语（共5小题，每小题2分）（1）A perfectly rigid or inextensible link can exist only as a textbook type of model of a real machine member.（2）Foundations should ensure the machine’s stiffness; shock absorption and isolation are secondary considerations.(3)Thus, if a mechanical component such as a spring is subjected to repetitive or cyclical applications of stress levels much lower than the ultimate strength, it will fracture after a large number of repetitions of this stress.（4）Interchangeability means that identical parts must be interchangeable, i.e., able to replace each other, whether during assembly or subsequent maintenance work; without the need for any fitting operations.（5）A gear can be gripped axially between a shoulder on the shaft anda spacer, with torque being transmitted through a key.2、将下段英语翻译成汉语（10分）As we look around us w e see a world full of “things”, machines, devices, tools, things that we have designed, built, and used; things made of wood, metals, ceramics, and plastics. We know from experience that some things are better than others; they last longer, cost less, are quieter, or are ease to use. Ideally , however, every such itemhas been designed according to some set of “functional requirements”（5）当一个装置意外地失效后，通常需要进行研究工作，来找出失效的原因和确定可能的改正措施。
机械英语试题及答案详解
机械英语试题及答案详解一、选择题1. The term "mechanical engineering" refers to the application of engineering principles to:A. Chemical processesB. Electrical systemsC. Design and manufacture of machinesD. Software development答案：C2. What is the primary function of a bearing in a mechanical system?A. To convert energyB. To reduce frictionC. To increase efficiencyD. To absorb heat答案：B3. The process of converting a rough workpiece into a finished part is known as:A. MachiningB. WeldingC. CastingD. Forging答案：A二、填空题4. The formula for calculating the force exerted by a springis known as ________.答案：Hooke's Law5. In mechanical design, the term ________ refers to thestudy of the forces and moments acting on a body.答案：Statics6. The unit of pressure in the International System of Units (SI) is ________.答案：Pascal (Pa)三、简答题7. Explain the difference between static and dynamic friction.答案：Static friction is the force that must be overcometo start moving an object at rest, while dynamic friction is the force that opposes the motion of an object that isalready moving.8. Describe the purpose of a gear in a mechanical system.答案：A gear is used to transmit motion and force from one part of a system to another, often changing the speed and/or direction of the motion.四、计算题9. A hydraulic press has a piston with an area of 0.02 m². If the pressure applied to the piston is 5 MPa, calculate the force exerted by the piston.答案：Force = P ressure × Area = 5 × 10⁶ Pa × 0.02 m²= 100,000 N10. A lever is balanced when the product of the effort force and its distance from the fulcrum is equal to the product of the load force and its distance from the fulcrum. If the effort force is 300 N and the load force is 1200 N, and the effort is applied 2 m from the fulcrum, calculate the distance from the fulcrum to the load.答案：Let the distance from the fulcrum to the load be\( x \). According to the principle of levers, \( 300 N\times 2 m = 1200 N \times x \). Solving for \( x \) gives\( x = \frac{300 N \times 2 m}{1200 N} = 0.5 m \).五、论述题11. Discuss the importance of mechanical vibrations in the context of machinery operation and maintenance.答案：Mechanical vibrations are crucial in machinery for several reasons. They can indicate the health of a machine, with abnormal vibrations often signaling a problem such as imbalance, misalignment, or wear. Monitoring vibrations can help in predictive maintenance, preventing breakdowns and extending the life of machinery.12. Explain the concept of stress concentration in mechanical components and its implications.答案：Stress concentration occurs in mechanical components where the stress is higher than the average stress due to geometrical discontinuities or material defects. This can lead to premature failure of the component under load, as the high-stress areas are more susceptible to fatigue and cracking. Designing to minimize stress concentrations and using materials with good fatigue resistance can mitigate these effects.。
机械工程专业英语试卷A机答案
XXXX/第1学期期终试卷A（考试类型：闭卷）课程机械工程专业英语(参照答案及评分阐明) 班级姓名一、词汇（20分）（每个题目为2分）1：把下列英文单词翻译成中文：(1) threshold参照答案：开端，开始(2) graphics terminal参照答案：图像终端(3) a translate command参照答案：平移指令(4) construction robotics参照答案：建筑（构造）机器人(5) a power-driven device参照答案：力驱动装置2：把下列中文词组翻译成英文：(6) 热加工参照答案：hot working(7) 非正常晶体生长参照答案：abnormal grain growth(8)再结晶参照答案：recrystallization(9) 机械效益参照答案：mechanical advantage(10)力放大器参照答案：a force multiplier二、句型（20分）（每个题目为4分）（翻译旳内容，到达意思一致即算对旳）请将下列英文句子翻译成中文（1）Efficiency and mechanical advantage are used to gauge the performance of mechanical machine .参照答案：效率和机械效益是用来检测机械装置旳工作性能旳。
（2）Methods of extracting , producing and treating metals are being developed all the time to meet engineering requirements .参照答案：为了满足工程需要，提炼、生产和处理金属旳措施一直处在发展进步之中。
(3) The common metallic materials possess the metallic properties of luster , thermal conductivity, and electrical conductivity ；are relatively ductile；and some have good magnetic properties .参照答案：常见旳金属材料拥有旳金属性能如：光泽、导热性和导电性，并且有很好旳延展性，此外，尚有某些金属材料具有好旳磁性。
机械专业英语试题含答案
2010-2011第二学期专业英语试卷A答案1.Translate the following Chinese terms into English ( one pointfor each,20 points for all)1) 汽车与工程机械automobile and construction machinery2) 筑路机械road-making machine3) 发电机generator4) 起动马达self starter5) 方向盘steering wheel6) 进气门inlet valve7) 齿轮泵gear pump8) 机油滤清器oil filter9) 差速器differential10) 摩擦式离合器friction clutch11) 蓄电瓶storage battery12) 铲土运输机scraper13) 塔式起重机tower crane14) 叉车fork lift15) 商业车辆commercial vehicle16) 变速箱transmission box (gear box)17) 带式输送机belt conveyer18) 步履式挖掘机walking excavator19) 颚式砸机jaw crusher20) 履带和轮胎track and tire2.Translate the following English terms into Chinese (one pointfor each, total 20 points)1) gasoline and diesel 汽油和柴油2) flywheel and cam 飞轮和凸轮3) disk brake 盘式制动器4) mechanical vibration 机械振动5) power steering 动力转向6) vibratory roller 振动式压路机7) hydraulic torque converter 液力变矩器8) piston ring 活塞环9) suspension system 悬挂系统10) cab and chassis 驾驶室与底盘11) radiator 散热器12) fuel-injection system 燃油喷射系统13) air compressor 空气压缩机14) lubrication and lubricant 润滑与润滑剂15) fine-mesh oil filter 机油细滤器16) pile driver 打桩机17) hydraulic excavator 液压挖掘机18) concrete paver 混凝土摊铺机19) truck mixer 搅拌车20) ignition system 点火系统3．Answer the following questions briefly(5 points for each, 20points for all)1）Which are included in an internal combustion engine？Two mechanisms：piston connecting rod mechanism and valve timing mechanism Five systems：fuel feed system，lubrication system，cooling system，starting system，and ignition system（only for petrol engine）.2）What are included in a working member of a hydrauli excavator？Boom，arm，bucket and cylinder of the boom，cylinder of the arm，cylinder of the bucket.3) What is the function of a differential ?The differentials is a gear assembly in a motor vehicle which allows the propeller shaft or drive shaft to turn the drive wheels at different speed when the vehicle is going around a curve.4) What is the difference between a bulldozer and an angledozer?A bulldozer is mounted with a blade perpendicular to the direction of travel. Andan angle dozer is mounted with a blade set an angle with the direction of travel.The former pushes the earth forward, while the latter pushes the earth forward and to one side, some blades may be adjusted their use to bulldozer or angledozer. 4. Translate the following sentences into Chinese. (40 points)A. Part One (5 points for each , 20 points for all)第一部分1) 真正最早上市的内燃机是名叫尼古拉斯·奥格斯特·奥托的德国人发明的。
机械专业英语试题及答案
教研室主任 （签字） 学院院长（系主任） （签字）C. degradation…corrosionD. corrosion… degradation12. Most frames _______ cast iron, weld steel, composition, or concrete.A. are made fromB. are made up ofC. was produced byD. was consist of13. Rotating shafts particularly those that run at high speeds, must be designed to avoidoperationat speeds.A . lowB .overload C. critical D. hollow14. Although cast iron is a fairly cheap material, each casting requires a .A. patternB. modelC. moldD. patent15. The term is used to describe joints with surface contact, as with a pin surrounded by a hole.A. high pairB. low pairC. surface pairD. rotary pair二、完型填空（在每个小题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计15分）The term shaft usually refers to a relatively long member of round cross section that rotates and transmits power. One or more members such as gears, sprockets, pulleys, and cams are usually (16) to the shaft by means of pins, keys, splines, snap rings, and other devi ces. These latter members are among the “associated parts” considered in this text, as are couplings and universal joint, which serve to (17) the shaft to the source of power or load.考生注意：考试时间 120 分钟试卷总分 100 分共 5 页第 1 页Sometimes members like gears and cams are made (28) with shaft, butmore often such members (which also include pulleys, sprockets, etc)aremade separately and then(29) shaft. The portion of the mounted memberin contact with the shaft is the hub. Attachment of the hub to the shaftis made in variety of ways. A gear can be gripped (30) between ashoulder on the shaft and a spacer, with torque being transmittedthrough a key. The grooves in the shaft and hub into which the key fitsare called keyways.16、 A) cement B) attached C) connected D) concrete17、 A) endure B) transmit C) serve D) connect18、 A) support B) meet C) satisfy D) strong19、 A) aims B) idler C) terminal D) tomb20、 A) due to B) weather C) whether D) for21、 A) elasticity B) torsional C) inertia D)acceleration22、 A) subjected B)…connect C) and D) From23、 A) deeply B) strength C) clearly understand D)long time24、 A) identify B) cross C) round D)lateral25、 A) lucrative B) objectionable C) attractable D)terrible订线read as follows.Engineering design is the process of devising a system, component, or process to meet desired needs. It is decision making process(often iterative),in which the basic sciences, mathematics, and engineering sciences are applied to convert resources optimally to meet a sated objectives and criteria, synthesis, analysis, construction ,testing, and evaluation. The engineering design component of a curriculum must include most of the following features : development of student creativity, use of open-ended problem statement and use of modern design theory and methodology, formulation of design problem statement and specification, consideration of alternative solutions, feasibility considerations, production process, concurrent engineering design, and detailed system descriptions. Further, it is essential to include a variety of realistic constraints such as economic factors, safety, reliability, aesthetics, ethics, and social impact.31、what’s the main meaning of message (1)?A) Engineering design is a systematic process B) materials engineer’s main workC) mechanical engineer’s has good idea D) electrical engineer’ main duty32、In the author’s opinion, the design process is very complex and should taken intoaccount many factors, from the message who should NOT join into the design team _______.A) environmentalists,B) sociologistsC) engineersD) Government officials33、From the message, we can know the meaning of words “ABET”(at line third paragraph)is _____.A) a set of accredits standardB) a kind of design methodC) a department of US government which responsible for engineering designD) A set of law34、It can be concluded from the passage that in the exercise and training of student,which character of the following is NOT included in the curriculum ______.A) creativityB) new materialC) ethicsD) economic factors35、The title of the message is ______.A) the roles of engineers in manufacturingB) the importance of mechanical designC) engineering designD) The process of machine designTEXT 2Working drawings are the complete set of standardized drawings specifying the manufactureand assembly of a product based on its design. The complexity of the design determines the number and types of drawings. Working drawings may be on more than one sheet and may contain written instructions called specifications.Working drawings are blueprints used for manufacturing products. Therefore, the set of drawings must:(a) completely describe the parts, both visually and dimensionally;(b)show the parts in assembly;(3)identify all the parts; and (4)specify standard parts. The graphics and text information must be sufficiently complete and accurate to manufacture and assemble the product without error.共 5 页第 2页(1) Detail drawings of each nonstandard parts.(2) An assembly or subassembly drawing showing all the standard and nonstandard parts in a single drawing.(3) A bill of materials (BOM).(4) A title block.A detail drawing is a dimensioned, multiview drawing of a single part, describing the part’s shape, size, material, and surface roughness, in sufficient detail for the part to be manufactured based on the drawing alone. Detail drawings are produced from design sketches or extracted from 3-D computer models. They adhere strictly to ANSI standards and the standard for the specific company, for dimensioning, assigning part numbers, notes, tolerances, etc.In an assembly, standard parts such as threaded fasteners and bearings are not drawn as details, but are shown in the assembly view. Standard parts are not drawn as details because they are normally purchased, not manufactured, for assembly.For large assemblies or assembled with large parts, details are drawn on multiple sheets, and a separate sheet is used for the assembly view. If the assembly is simple or the parts are small, detail drawings for each part of an assembly can be placed on a single sheet.Multiple details on a sheet are usually drawn at the same scale. If different scales are used, they are clearly marked under each detail. Also,when more than one detail is placed on a sheet, the spacing between detailsTEXT 3One principle aim of kinematics is to create (design) the desired motions of the subjects’ mechanical parts and then mathematically compute the positions, velocities, and accelerations, which those will create on the parts. Since, for most earthbound mechanical systems, the mass remains essentially constant with time, defining the accelerations as a function of time then also defines the dynamic forces as a function of time. Stresses, in turn, will be a function of both applied and inertial (ma) forces. Since engineering design is charged with creating systems which will not fail during their expected service life, the goal is to keep stresses within acceptable limits for the materials chosen and the environmental conditions encountered. This obviously requires that all system forces be defined and kept within desired limits. In machinery, the largest forces encountered are often those due to the dynamics of the machine itself. These dynamic forces are proportional to acceleration, which brings us back to kinematics, the foundation of mechanical design. Very basic and early decision in the design process involving kinematic principles can be crucial to the success of any mechanical design; a design which has poor kinematics will prove troublesome and perform badly.Any mechanical system can be classified according to the number of degree of freedom (DOF) which it processes. The system’s DOF is equal to the number of independent parameters which are needed to uniquely define its position in space at any instant of time.A rigid body free to move within a reference frame will, in the general case, has complex motion, which is a simultaneous combination of rotation and translation. In three-dimensional space, there may be rotation about any axis and also simultaneous translation which can be resolved into components along three axes. In a plane, or two-dimensional space, complex motion becomes a combination of simultaneous rotation about one axis (perpendicular to theplane) and also translation resolved into components along two axes in the plane41、Kinematics research focus on the following EXCEPT ______..A) accelerations B) forceC) positions, D) velocities42、From the passage that for the design engineer the first and most important is____A) the service life of a machine B) the materials chooseC) the degree of freedom D) kinematic principles43、An mechanical system has uniquely defined position in space at any instant of time that ___.A) It should has one DOFB) It should Has two DOFC) the DOF and the number of independent parameters should equalD) It should has any DOF as want44、 which one of the following is NOT TRUE _______?.A) A rigid body free to move in three-dimensional space may rotation about any axisB) A rigid body free to move in three-dimensional space is a simultaneous combinationof rotation and translationC) A rigid body free to move in three-dimensional space can be resolved into componentsalong three axesD) A rigid body free to move in three-dimensional space may has complex motion45、The best title for this passage would be _______.A) kinematics B) dynamicsC) kinematics and dynamic D) the important of kinematics共 5 页第3 页1．将下列英语句子译成汉语（共5小题，每小题2分）（1）A perfectly rigid or inextensible link can exist only as a textbook type of model of a real machine member.（2）Foundations should ensure the machine’s stiffness; shock absorption and isolation are secondary considerations.(3)Thus, if a mechanical component such as a spring is subjected to repetitive or cyclical applications of stress levels much lower than the ultimate strength, it will fracture after a large number of repetitions of this stress.（4）Interchangeability means that identical parts must be interchangeable, i.e., able to replace each other, whether during assembly or subsequent maintenance work; without the need for any fitting operations.（5）A gear can be gripped axially between a shoulder on the shaft and a spacer, with torque being transmitted through a key.2、将下段英语翻译成汉语（10分）As we look around us we see a world full of “things”, machines, devices, tools, things that we have designed, built, and used; things made of wood, metals, ceramics, and plastics. We know from experience that some things are better than others; they last longer, cost less, are quieter, or are ease to use. Ideally , however, every such item has been designed according to some set of “functional requirements” as perceived by thedesigners—that is, it hs been designed so as to answer the question,（5）当一个装置意外地失效后，通常需要进行研究工作，来找出失效的原因和确定可能的改正措施。
机械专业英语考题
一、单词和词组翻译posite 复合材料 2.ferrite 铁素体 3.cavity 型腔 4.upsetting 镦粗 5.amorphous 非晶体 6.abrasive 研磨剂，研磨的the 车床8.drilling 钻孔9.servomechanism 伺服机构10.reaming 铰刀，铰孔11.minicomputer小型计算机12.contour 轮廓，曲面仿形13.modulus 模量14.material 材料15.carburizing 渗碳16.core 型芯17.extruder 挤压机，挤出机18.crystalline 晶体19.elastomer 弹性体、人造橡胶20.microcomputer 微型计算机21.chill冷却22.robotics机器人学23.threading 车螺纹24.coherency 相干性25worm 蜗杆pping 研磨27.fracture toughness 断裂韧性28.quench—hardened steel 淬火硬化钢29.gating system 浇铸系统30.injection molding 注塑成型31.electrical—discharge machining，electro-- discharge machining 电火花加工32.feed screw 丝杆33.numerical control （NC）数字控制34.artificial intelligence （AL）人工智能35.hypereutectold steel 过共析钢36.internal grinding 内圆磨削37.leaf spring 板簧，弹簧片38.CAI ( Computer Aided Inspection) 计算机辅助检验39. clearance fit 间隙配合40.CIM (Computer Integrated Manufacturing) 计算机集成制造41. Surface grinding 平面磨削42.plastic deformation 塑性变形43.solid solution 固溶体44.parting surface 分型面45.machine tool 机床ser beam machining（LBM）激光加工47.machining center加工中心48.concurrent engineering 并行工程49.gear blank 齿轮毛坯50.cylinder liner 气缸衬垫，缸套51.continuous—path system 连续路径系统52.interference fit过盈配合53.vertical turning and boring mills旋转立式车床54.CAD/CAM 计算机辅助设计/计算机辅助制造55.CADD---computer aided drafting and design计算机辅助制图和设计d steel低碳钢二、填空1、Density is defined as a materia l’s mass divided by its volume . Most metals have relatively High densities , especially compared to polymers . Materials with high densities often contain atoms with high atomic numbers , such as gold or lead . However , some metals such as aluminum or magnesium have low densities ,and are used in applications that require other metallic properties but also require low weight. .2、A ceramic is often broadly defined as any inorganic nonmetallic material .By this definition , ceramic materials would also include glasses ; however ,many materials scientists add the stipulation , that ―ceramics‖ must also be crystalline .3、Heat treatment is the operation of heating and cooling a metal in its solid state to change its physical properties . According to the procedure used , steel can be hardened to resist cutting action and abrasion , or it can be softened to permit machining .4、The key transition described in this diagram is the decomposition of single-phase austenite (γ) to the two-phase ferrite plus carbide structure as temperature drops .5、Sand casting is used to make large parts (typically iron , but also bronze , brass ,aluminum) . Molten metal is poured into a mold cavity formed out of sand (natural or synthetic) .6、In a two-part mold , which is typical of sand casting , the upper half include the top half of the pattern ,flask , and core is called cope and the lower half is called drag . The parting line or the parting surface is line or surface that separates the cope and drag .7、Forging is an important hot-forming process .It is used in producing components of all shapes and sizes , from quite small items to large units weighing several tons .8、A proper lubricant is necessary for making good forgings . The lubricant is useful in preventing sticking of the workpiece to the die , and also acts as a thermal insulator to help reduce die wear .9、It is not impossible to injection-mold all polymers . Some polymers like PTFE(Poly-tetra-fluoro-ethylene ) , cannot be made to flow freely enough to make them suitablefor injection molding . In general , polymers which are capable of being brought to a state of fluidity can be injection-molded .10、The vast majority of injection molding is applied to thermoplastic polymers . This class of materials consists of polymers which always remain capable of being softened by heat and of hardening on cooling , even after repeated cycling .11、One important fundamental limitation applies to all the electrical-machining processes ,namely , the requirement that the work material must be an electrical conductor .12、Electrochemical machining (ECM) refers to the process of metal removal in which electrolytic action is utilized to dissolve the workpiece metal . The term ECM is sometimes used also for the electrolytic grinding process .13、A numerical control system consists of the following three basic components :•Program of instructions •Machine control unit•Processing equipment14、The machine control unit(MCU) consists of the electronics and control hardware that read and interpret the program of instruction and convert it into mechanical actions of the machine tool or other processing equipment .15、There are four types of statements in the APT(Automatically programmed tools) language :Geometry statements . There define the geometric elements that comprise the workpart . They are also sometimes called definition statements .Motion statements . There are used to describe the path taken by the cutting tool .Postprocessor statements . There apply to the specific machine tool and control system . They are used to specify feeds and speeds and to actuate other features of the machine .Auxiliary statement . There are miscellaneous statements used to identify the part , tool , tolerance , and so on ,-16、Programming of NC(Numerical control ) machines takes two forms : manual programming and code generation with the support of CAM (Computer –aided manufacturing ) software .17、The workpiece in a machining center is placed on pallet or module that can be moved and swiveled (oriented )in various directions .After a particular cutting operation has been completed , the workpiece does not have to be moved to another machine (as has been done traditionally )for additional operations .18、The maximum dimensions that the cutting tools can reach around a workpiece in a machining center is known as the work envelope; this term was first used in connection with industrial robots .19、Computer-aided design(CAD) can be defined as the use of computer systems to assist in the creation , modification , analysis , or optimization of a design .20、The CAD software consists of the computer programs to implement computer graphics on the system plus application programs to facilitate the engineering functions of the user company .三、翻译1、This is the component in which a product is engineered , designed , tested throughsimulation ,documented through drawings , specifications , and other documentation tools such as part lists and bills of material .在这一部分，产品通过仿真来制作，设计、和测试；并通过图样、标准和其他文档编制工具如零件清单和物料清单来形成有关文件。
机械英语考试试题及答案
机械英语考试试题及答案一、选择题（每题2分，共20分）1. The term "mechanical engineering" refers to:A. The study of machinesB. The design and manufacture of mechanical systemsC. The operation of machineryD. The maintenance of mechanical equipment答案：B2. What is the function of a bearing in a mechanical system?A. To reduce frictionB. To increase efficiencyC. To provide powerD. To transmit motion答案：A3. The process of converting thermal energy into mechanical energy is known as:A. ElectrificationB. CombustionC. ThermodynamicsD. Hydrodynamics答案：C4. In mechanical design, the principle of "KISS" stands for:A. Keep It Simple, StupidB. Keep It Short and SimpleC. Keep It Simple and SafeD. Keep It Simple, Smart答案：A5. A gear train is used to:A. Change the direction of motionB. Increase the speed of rotationC. Decrease the speed of rotationD. All of the above答案：D6. What does CAD stand for in mechanical engineering?A. Computer-Aided DesignB. Computer-Aided DraftingC. Computer-Aided DevelopmentD. Computer-Aided Diagnostics答案：A7. The SI unit for force is:A. NewtonB. JouleC. PascalD. Watt答案：A8. What is the purpose of a flywheel in a mechanical system?A. To store energyB. To increase speedC. To reduce noiseD. To dissipate heat答案：A9. The term "hydraulics" is associated with the study of:A. Fluid dynamicsB. Solid mechanicsC. Structural analysisD. Thermal engineering答案：A10. The process of cutting a material to a specific shape is known as:A. MachiningB. CastingC. ForgingD. Extrusion答案：A二、填空题（每空1分，共10分）11. The formula for calculating the moment of a force is \( F \times d \), where \( F \) is the force and \( d \) is the_______.答案：distance from the pivot12. A _______ is a device that converts linear motion into rotational motion.答案：crank13. In a four-stroke internal combustion engine, the four strokes are intake, compression, _______, and exhaust.答案：power14. The _______ of a material is its ability to resist deformation under load.答案：stiffness15. The term "overhaul" in mechanical maintenance refers to a thorough inspection and _______ of a machine or its parts.答案：repair16. The _______ of a machine is the study of how forces act on and within a body.答案: statics17. A _______ is a type of machine that uses a screw to convert rotational motion into linear motion.答案：screw jack18. The _______ of a system is the point around which the system rotates.答案：pivot19. The _______ of a lever is the ratio of the effort arm to the load arm.答案：mechanical advantage20. The _______ is a type of bearing that allows for rotation with minimal friction.答案：ball bearing三、简答题（每题5分，共30分）21. Explain the difference between static and dynamic equilibrium in mechanical systems.答案：Static equilibrium refers to a state where the net force and net moment acting on a body are zero, resulting in no acceleration. Dynamic equilibrium occurs when the net force is zero, but the body is in motion with constant velocity.22. What is the purpose of a clutch in a vehicle?答案：A clutch is used to engage and disengage the power transmission from the engine to the transmission system, allowing the vehicle to start, stop, and change gears smoothly.23. Describe the function of a governor in an engine.答案：A governor is a device that automatically controls the speed of an engine by regulating the fuel supply or the valve settings, ensuring the engine operates within safespeed limits.24. What are the three primary types of joints in structural engineering?答案：The three primary types of joints are pinned joints, fixed joints, and sliding joints, each serving different purposes in connecting and supporting structural elements.25. Explain the。
机械专业英语试题及答案
精品文档机械工程专业英语课程考试方式（□闭卷□开卷）课程性质（□必修□限选□任选）一、选择题分，115小题，每小题（在每题四个备选答案中选出一个正确答案，本大题共分）总计15planar undergoes the system linkage move in parallel planes 1. If all points in a.motion and the linkage may be described as aD. slide B. planar linkage C. joints A. planar motion sometimes are Though 2. frame material and design should handle damping, built into frame sections to handle specific problems.D. screwC. dampers A .beams B. holesThe maximum allowable deflection of a shaft ______ determined by critical speed, 3. gear, or bearing requirements.D. is usually C. was B. must A. oftenmore generate solutions as we to _____ to better and better 4. We will have information.D. try ways B. iterating C. iterate A. repeat many timesdetermine to then examined configuration is _______ specified and 5. If a product whether the performance requirements are met.D. have beenC. temporary B. tentatively A. finallyManufacturing can be defined as the _____ of raw materials into useful products 6. through the use of the easiest and lest-expensive methods.D. transformingC. process B. processing A. transformation7. The planer and knee types of milling machine is _____ because of its flexibility.B. most popular A. used most commonlyD. most powerfulC. the most commonly usedforce _____ frequency of the vibrate result, the system will at the 8. As a regardless of the initial conditions or natural frequency of the system.D. actC. out B. excitation A. actionthe between the relationship components are assembled together, Before 9. two dimensions of the mating surfaces_______.should printed clearlyB. A. must be giving outC. must be specifiedD. should be clearly noted10. The main practical advantage of lower pairs is their better ability to trap lubricant between their ______ surfaces.D. outsideA. envelopingB. matingC. outer11. The word______ itself usually refers to the deterioration of metals and ceramics, while similar phenomena in plastics generally called ______.A. recrystallization…. corrosionB. recrystallization…degradation精品文档．精品文档D. corrosion…degradation C. degradation…corrosion12. Most frames _______ cast iron, weld steel, composition, or concrete.B. are made up ofA. are made fromD. was consist ofC. was produced by13. Rotating shafts particularly those that run at high speeds, must be designed to avoid operationspeeds.atD. hollow C. critical B .overload A . low.14. Although cast iron is a fairly cheap material, each casting requires aD. patentC. mold B. model A. patternis used to describe joints with surface contact, as with a pin surrounded by a hole.15. The termD. rotary pair C. surface pair B. low pair A. high pair15分）二、完型填空（在每个小题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计The term shaft usually refers to a relatively long member of round cross section that rotates andtransmits power. One or more members such as gears, sprockets, pulleys, and cams are usually (16)to the shaft by means of pins, keys, splines, snap rings, and other devices. These latter members areamong the “associated parts”considered in this text, as are couplings and universal joint, which servethe shaft to the source of power or load.to (17)A shaft can have a noround cross section, ant it need not necessarily rotate. It can be stationary anda rotating member, such as the short shafts that support the nondriving wheels of an serve to (18)(20) depending on automobile. The shafts supporting(19) gears can be either rotating or stationarythe gear is attached to the shaft or supported by it through bearings.of shafts can be subjected to various combinations axial, bending, and(21) that It isapparentloads, and that these loads may be static or fluctuating. Typically, a rotating shaft transmitting power isreversed a completely together a mean torsional stress) with a (22) to constant torque (producingbending load (producing an alternating bending stress).requirements, shafts must be designed so that deflections are within In addition to satisfying (23)cause (25) deflection acceptable limits. Excessive (24) shafts can hamper gear performance andbearings(either noise. The associated angular deflection can no-self- aligning be very destructive tomechanism. gear driven cam the can affect accuracy of a or or plain rolling). (26) deflectioncorresponding lower the (27) or the Furthermore, the greater flexibility -either lateral torsional-thespeed.100 试卷总分分钟120 考试时间考生注意：分页5 共1 第页精品文档．精品文档Sometimes members like gears and cams are made (28) with shaft, but moreoften such members (which also include pulleys, sprockets, etc)are made separately and then(29) shaft. The portion of the mounted member in contactwith the shaft is the hub. Attachment of the hub to the shaft is made invariety ofways. A gear can be gripped (30) between a shoulder on the shaft and a spacer, with torque being transmitted through a key. The grooves in the shaft and hub intowhich the key fits are called keyways.班级attached C) connected B) D) concrete 16、A) cement connect D) C) serve 17、A) endure B) transmitsupport B) meet C) satisfy 18、A) D) strong 学号idler C) terminal 19、A) aims B) D) tomb装whether C) D) for20、A) due to B) weather torsional C) inertia 21、A) elasticity B) D) accelerationsubjected B)…connect C) and 、A) D) From22姓名strength C) clearly understand 23、A) deeply B) D) long time lateral D) C) round 24、A) identify B) cross objectionable C) attractable B) D) terrible 25、A) lucrativeTorsional D) Movement C) 26、A) Moment B)Tormentcritical C) first B) D) important 27、A) highintegral C) D) simplification 、A) work B) idealization 28 mounted onto B) refers C) referring to 29、A) D) indicatesaxially D) 30、A) deformations B) bending limits C) laternal 订三、阅读理解（在每个小题四个备选答案中选出一个正确答案，填在题头的表中）（本大题共20小题，每小题2分，总计40分）Text 1Engineering design is a systematic process by which solution to the needs of humankind are obtained .The process is applied to problems(needs) of varying complexity .For example, mechanical engineers will use the design process to find an effective, efficient method to convert reciprocating motion to circular motion for the drive train in an intnternal combustion engine; electrical engineers will use the process to design electrical generating systems using falling wateras the power source; and materials engineers use the process to design ablative materials whichenable astronauts to safely reenter the earth's atmosphere.线The vast majority of complex problems in today's high technology society depend for solutionnot on a single engineering discipline, but on teams of engineers, scientists, environmentalists, economists, sociologists, and legal personnel. Solutions are not only dependent regulations and political influence. As engineers we are empowered with the technical expertise to develop new and improved products and systems, but at the same time we must be increasingly aware of the impactof our actions on society and the environment in general and work conscientiously toward the best solution in view of all relevant factors.Design is the culmination of engineering educational process; it is the salient feature thatdistinguishes engineering design is found in the curriculum guidelines of the Accreditation Boardfor Engineering and Technology(ABET).ABET accredits curricula in engineering schools andderives its membership from the various engineering professional societies. Each accredited curriculum has a well-defined design component which falls within the ABET statement on design精品文档．精品文档read as follows.Engineering design is the process of devising a system, component, or process to meet desired needs. It is decision makingprocess(often iterative),in which the basic sciences, mathematics, and engineering sciences are applied to convert resourcesoptimally to meet a sated objectives and criteria, synthesis, analysis, construction ,testing, and evaluation. The engineeringdesign component of a curriculum must include most of the following features : development of student creativity, use ofopen-ended problem statement and use of modern design theory and methodology, formulation of design problem statementand specification, consideration of alternative solutions, feasibility considerations, production process, concurrent engineeringdesign, and detailed system descriptions. Further, it is essential to include a variety of realistic constraints such as economicfactors, safety, reliability, aesthetics, ethics, and social impact.31、what's the main meaning of message (1)?A) Engineering design is a systematic process B) materials engineer's main workC) mechanical engineer's has good idea D) electrical engineer' main duty32、In the author's opinion, the design process is very complex and should taken into account many factors, from themessage who should NOT join into the design team _______.A) environmentalists,B) sociologistsC) engineersD) Government officials33、From the message, we can know the meaning of words “ABET”(at line third paragraph) is _____.A) a set of accredits standardB) a kind of design methodC) a department of US government which responsible for engineering designD) A set of law34、It can be concluded from the passage that in the exercise and training of student, which character of the following isNOT included in the curriculum ______.A) creativityB) new materialC) ethicsD) economic factors35、The title of the message is ______.A) the roles of engineers in manufacturingB) the importance of mechanical designC) engineering designD) The process of machine designTEXT 2Working drawings are the complete set of standardized drawings specifying the manufacture and assembly of a productbased on its design. The complexity of the design determines the number and types of drawings. Working drawings may be onmore than one sheet and may contain written instructions called specifications.Working drawings are blueprints used for manufacturing products. Therefore, the set of drawings must:(a) completelydescribe the parts, both visually and dimensionally;(b)show the parts in assembly;(3)identify all the parts; and (4)specifystandard parts. The graphics and text information must be sufficiently complete and accurate to manufacture and assemble theproduct without error.共5 页第 2 页精品文档．精品文档Generally, a complete set of Working drawings for an assembly includes:(1) Detail drawings of each nonstandard parts.(2) An assembly or subassembly drawing showing all the standard and nonstandard parts in a single drawing.(3) A bill of materials (BOM). (4) A title block.A detail drawing is a dimensioned, multiview drawing of a single part, describing the part's shape, size, material, and surface roughness, in sufficient detail for the part to be manufacturedbased on the drawing alone. Detail drawings are produced from design sketches or extracted from 3-D computer models. They adhere strictly to ANSI standards and the standard for the specific company, for dimensioning, assigning part numbers, notes, tolerances, etc. In an assembly, standard parts such as threaded fasteners and bearings are not drawn as details, but are shown in the assembly view. Standard parts are not drawn as details because they are normally purchased, not manufactured, for assembly.For large assemblies or assembled with large parts, details are drawn on multiple sheets, and a separate sheet is used for the assembly view. If the assembly is simple or the parts are small, detaildrawings for each part of an assembly can be placed on a single sheet.Multiple details on a sheet are usually drawn at the same scale. If different scales are used,they are clearly marked under each detail. Also, when more than one detail is placed on a sheet, the spacing between details is carefully planned, including leaving sufficient room for dimensions and notes.36. Based on the message, which of the follow is wrong?订A) standard parts needn't drawn as detailsB) for simple parts, sometimes needn't to draw the detail working drawingC) for large assemblies details may drawn on multiple sheetsD) If different scales used in a single sheet, they should clearly marked under each detail37. Working drawings for an assembly MAY NOT includes: ?A) BOM B) title blockC) An assembly or subassembly drawing D) Detail drawings of all parts.38. For detail drawing, Which one of the following statement is not true ?A) should not has different scalesB) Detail drawing can produced from design sketches or extracted from 3-D computermodels.线C) detail drawing is a dimensioned, multiview drawing of a single partD) should Adhere strictly to ANSI standards39. From the message we can infer ANSI is ?A) a set of law B) a set of notificationC) an Organization D) IEEE government40. The topic of the message is ?A) How to design working drawings.B) working drawing's character and the key influence of how to draw a working drawingC) In the design process, what should be considered?What is working drawing D)精品文档．精品文档TEXT 3One principle aim of kinematics is to create (design) the desired motions of the subjects' mechanicalparts and then mathematically compute the positions, velocities, and accelerations, which those will create onthe parts. Since, for most earthbound mechanical systems, the mass remains essentially constant with time,defining the accelerations as a function of time then also defines the dynamic forces as a function of time.Stresses, in turn, will be a function of both applied and inertial (ma) forces. Since engineering design ischarged with creating systems which will not fail during their expected service life, the goal is to keepstresses within acceptable limits for the materials chosen and the environmental conditions encountered. Thisobviously requires that all system forces be defined and kept within desired limits. In machinery, the largestforces encountered are often those due to the dynamics of the machine itself. These dynamic forces areproportional to acceleration, which brings us back to kinematics, the foundation of mechanical design. Verybasic and early decision in the design process involving kinematic principles can be crucial to the success ofany mechanical design; a design which has poor kinematics will prove troublesome and perform badly.Any mechanical system can be classified according to the number of degree of freedom (DOF) which itprocesses. The system's DOF is equal to the number of independent parameters which are needed touniquely define its position in space at any instant of time.A rigid body free to move within a reference frame will, in the general case, has complex motion, whichis a simultaneous combination of rotation and translation. In three-dimensional space, there may be rotationabout any axis and also simultaneous translation which can be resolved into components along three axes. Ina plane, or two-dimensional space, complex motion becomes a combination of simultaneous rotation aboutone axis (perpendicular to the plane) and also translation resolved into components along two axes in theplane41、Kinematics research focus on the following EXCEPT ______..A) accelerations B) forceC) positions, D) velocities42、From the passage that for the design engineer the first and most important is____A) the service life of a machine B) the materials chooseC) the degree of freedom D) kinematic principles43、An mechanical system has uniquely defined position in space at any instant of time that ___.A) It should has one DOFB) It should Has two DOFC) the DOF and the number of independent parameters should equalD) It should has any DOF as want44、which one of the following is NOT TRUE _______?.A) A rigid body free to move in three-dimensional space may rotation about any axisB) A rigid body free to move in three-dimensional space is a simultaneous combination of rotationand translationC) A rigid body free to move in three-dimensional space can be resolved into components alongthree axesD) A rigid body free to move in three-dimensional space may has complex motion45、The best title for this passage would be _______.A) kinematics B) dynamicsC) kinematics and dynamic D) the important of kinematics共5 页第 3 页精品文档．精品文档四、英译汉（共20分）1．将下列英语句子译成汉语（共5小题，每小题2分）A perfectly rigid or inextensible link can exist only as a textbook type of model of ）1（a real machine member.Foundations should ensure the machine's stiffness; shock absorption and isolation ）（2are secondary considerations.cyclical or spring a mechanical component such as a is subjected to repetitive Thus, (3)if large after a strength, of applications stress levels much lower than the ultimate it will fracture number of repetitions of this stress.Interchangeability means that identical parts must be interchangeable, i.e., able to replace each 4）（other, whether during assembly or subsequent maintenance work; without the need for any fitting operations.A gear can be gripped axially between a shoulder on the shaft and a spacer, with ）（5torque being transmitted through a key.分）、将下段英语翻译成汉语（102As we look around us we see a world full of “things”, machines, devices, tools, things that we 订have designed, built, and used; things made of wood, metals, ceramics, and plastics. We know from experience that some things are better than others; they last longer, cost less, are quieter, or are easeto use. Ideally , however, every such item has been designed according to some set of “functional the answer to been that designers—is, it hs designed so as perceived requirements”as by themajor engineering, the world In it “exactly question, what function should perform?”the of function frequently is to support some type of loading due to weight, inertia , pressure, etc.五、英译汉（共20分）1、将下列分）25小题，每小题句子译成英语（共一个或多个诸如齿轮，链轮，皮带轮和凸轮等类的构件通常借助于销、键、）（1 线花键、卡环或其它装置连接到轴上。
机械专业英语试题
机械专业英语试题1.Hot forming2.Thermoplastic3.Incremental encoder4.Plastic deformation5.Robotics6.Integrated circuit7.Hunmidity8.Worn TTransmission9.Rectifier circuit10.Helical gear reducer11.过载电流12.计算机辅助管理13.表面光洁度14.套筒15.不平衡输出16.人机接口17.液压系统18.滤波电路19.轴20.开关1.There are processing method for milling, namely, Down milling and milling. The up milling can be also called milling.A.faruardB.inverseC.directD.reverse2.Which option in the following is not the special type of the milling machines.A.Rotary tableB.Spline shafting milling machineC.Down milling typeD.Drum type3.PLC control can be used in circular motion and motion.A.linerB.periodicC.oscillationD.reciprocating4.THE is not included in the Automobile Chassis.A.Transmission systemB.Driving systemC.Steering systemD.ABS system5. is a kind of automobile safety control system which has the advantageOf non-slip,anti-lock and so on.A.ABSB.ASCC.ASRD.ASL6.The Righe-hand rule:thumb conductor cutting magnetic induction line direction, Pointed out the direction of the induced current.A.the direction of the thumbB.the direction reverse to the thumbC.the direction of the four fingersD.the direction reverse to the four fingers7.DC motor can be divided into two types,whichinclude and Brushless DC motor.A.DC brush motorB.DC staor motorC.DC rotor motorD.DC coil motor8.Four wheels cars are represent by four independent wheel motors,which do not Include .A.electronically commutated inverterB.canceled mechanical inverterC.brushesD.tine9.The reason why the stepper motors are frequently used does ont include .A.high ratio of torque versus versus sizeB.easy computer controlC.good per performance in open-loop controlD.easy feedback control10.Replying to your advertisement into days issus of the newspaper,I wish to apply for the in your esteemed firm.A.SolublenessB.PositionC.Solubility DReference11.Wharm forging:forging below the recrystallization temperature of the metal.A.SelectivityB.StructureC.SelectionD.Temperature12.The production(bed)types of the milling machines include simplex,duplex and .A.triplexB.quadruplexC.quintuplexD.sextuplex13.Please accept my heartfelt and deepest gratitude,now and always.A.UnderstandingB.ResponseC.ThanksD.Attention14.The CIMS system consist by MRPLL,MIS,CAPP, .A.OG/doc/983370989.html,CC.OBJD.OMG15.Principle of”KISS”which means Keep it simply .ASimple B.Seperation C.Sysmble D.Stable16.For CIMS benefits evaluation can~t on monetary standard to measure the benfit,to many consider its effectiveness index.A.AbsolutelyB.WidelyC.TrulyD.Solely17.Sensory system contain three part:Control pare, ,sensing pare.A.Electric partB.ActuatorC.Mechanical partD.Photometer18.When we need to apologize for your mistake,we can say”Please the error.”A.MissB.SolucityC.PardonD.Selectivity1、虽然设计和建造深冲模具是一门科学，但基本的金属流动法则永远不会被忽视，因为它们是一个深冲形成操作成功的基础。
《机械工程专业英语》试卷A及答案
适用专业：考试日期：考试时间：120分钟考试形式：闭卷试卷总分：100分一.单词英汉互译（20×1=20分）：1.车削2.铣削3.齿轮4.磨削5.钻孔6.铸造7.锻造8.焊接9.车床10.公差11. clearance fit 12.transition fit 13.interference fit 14.headstock 15.tailstock16. carriage 17.leadscrew 18. feed rod 19.stress 20.strain二.把下列句子翻译成中文（10×6=60分）：1．The branch of scientific analysis which deals with motions, time, and forces is called mechanics and is made of two parts , static and dynamics。
(6分)2．Law 1 If all the forces acting on a particle are balanced, the particle will either remain at rest or will continue to move in a straight line at a uniform velocity。
（6分）3．Force F is a vector. The characteristics of a force are its magnitude, its direction, and its point of application 。
（6分）4．The essential components of a lathe are the bed, headstock assembly, tailstock assembly, carriage assembly, and the leadscrew and feed rod.。
机电专业英语试题及答案
机电专业英语试题及答案一、选择题（每题2分，共10分）1. Which of the following is not a type of electrical machine?A. GeneratorB. TransformerC. PumpD. Motor答案：C2. The unit of electrical power is:A. VoltB. AmpereC. WattD. Ohm答案：C3. In an electrical circuit, what does the term "resistance" refer to?A. The ability of a material to conduct electricityB. The ability of a material to resist heatC. The ability of a material to resist electricityD. The ability of a material to resist light答案：C4. What is the function of a relay in an electrical system?A. To amplify signalsB. To switch circuits on or offC. To measure currentD. To convert AC to DC答案：B5. What does the acronym PLC stand for in industrial automation?A. Power Line CommunicationB. Personal Learning ComputerC. Programmable Logic ControllerD. Public Limited Company答案：C二、填空题（每题2分，共10分）1. The three main components of an electric motor are the stator, the rotor, and the ________.答案：bearings2. The process of converting mechanical energy intoelectrical energy is known as ________.答案：generation3. A ________ circuit is a closed loop through which electric current flows.答案：closed4. The unit of electrical resistance is the ________.答案：ohm5. In a hydraulic system, a ________ is used to convert fluid power into mechanical power.答案：actuator三、简答题（每题5分，共20分）1. Explain the difference between AC and DC current.答案：AC (Alternating Current) is an electric current whose direction and magnitude change periodically, while DC (Direct Current) is an electric current that flows in a constant direction.2. What are the main components of a typical electrical power distribution system?答案：The main components include power generation, transmission lines, substations, distribution lines, and end-user equipment.3. Describe the function of a capacitor in an electrical circuit.答案：A capacitor in an electrical circuit stores electrical energy in an electric field. It can smooth out voltage fluctuations, filter out noise, and provide a stable voltage supply.4. What are the advantages of using a programmable logic controller (PLC) in industrial automation?答案：PLCs are advantageous due to their reliability, flexibility, ease of programming, and ability to handle multiple inputs and outputs, making them ideal for complex control systems in industrial automation.四、翻译题（每题5分，共20分）1. 将下列句子翻译成英文：“电机的效率是指电机输出的机械功率与输入的电功率之比。
机械专业英语试题及答案
机械专业英语试题及答案一、词汇题（每题1分，共10分）1. The process of changing a solid object into a liquid by heating is called ________.A. meltingB. evaporationC. condensationD. solidification答案：A2. A device that converts thermal energy into mechanical energy is known as a ________.A. engineB. generatorC. turbineD. pump答案：A3. The study of the forces and motion of objects is called ________.A. physicsB. mechanicsC. thermodynamicsD. fluid dynamics答案：B4. A machine that uses a rotating wheel to lift water is called a ________.A. pumpB. wheelC. turbineD. lever答案：A5. The process of removing heat from a substance is called ________.A. heatingB. coolingC. insulationD. refrigeration答案：D6. The science of measuring the properties of materials is called ________.A. metrologyB. material scienceC. thermodynamicsD. mechanics答案：A7. A machine that uses a pivot point to multiply force is called a ________.A. leverB. pulleyC. wheel and axleD. inclined plane答案：A8. The process of making a solid object by heating a liquidis called ________.A. meltingB. evaporationC. condensationD. solidification答案：D9. A machine that uses a belt and pulley system to transmit motion is called a ________.A. leverB. pulleyC. wheel and axleD. inclined plane答案：B10. The study of the behavior of materials under stress is called ________.A. mechanicsB. material scienceC. thermodynamicsD. fluid dynamics答案：B二、阅读理解（每题2分，共20分）阅读以下段落，并回答问题。
《机械工程专业英语》课程考试试题
《机械工程专业英语》课程考试试题翻译（将下列英文段落翻译成中文，要求表述清晰，语言精练，共4 段文章，每段全分25 分，试卷总分100 分。
）1. Discontinuous Chip. The segmented chip separates into short pieces, which may or may not adhere to each other. Severe distortion of the metal occurs adjacent to the face, resulting in a crack that runs ahead of the tool. Eventually, the shear stress across the chip becomes equal to the shear strength of the material, resulting in fracture and separation. With this type of chip, there is little relative movement of the chip along the tool face. Continuous with a built-up edge. This chip shows the existence of a localized, highly deformed zone of material attached or “welded” on the tool face. Cooling action. Originally it was assumed that cutting fluid improves the cutting performance by its cooling properties alone. That is why the name coolant was given to it.2. Alloy steel owe their properties to the presence of one or more elements other than carbon, namely nickel, chromium, manganese, molybdenum, tungsten, silicon, vanadium, and copper. Because of their improved physical properties they are used commercially in many ways not possible with carbon steels. Since this chemical separation of the carbon component occurs entirely in the solid state, the resulting structure is a fine mechanical mixture of ferrite and cementite. Specimens prepared by polishing and etching in a weak solution of nitric acid and alcohol reveal the lamellar structure of alternating plates that forms on slow cooling.3. Investment casting is also known as the lost wax process. This process is one of the oldest manufacturing processes. The Egyptians used it in the time of the Pharaohs to make gold jewelry some 5,000 years ago. Full-mold casting is a technique similar to investment casting, but instead ofwax as the expendable material, polystyrene foam is used as the pattern. The foam pattern is coated with a refractory material. The pattern is encased in a one-piece sand mold. As the metal is poured, the foam vaporizes, and the metal takes its place.4. A manual transmission (also known as a stick shift, or standard transmission) is a type of transmission used in automotive applications. Manual transmissions often feature a driver-operated clutch and a movable gear selector, although some do not.。
机械工程专业外语试卷
机械工程专业外语试卷《机械工程专业英语》测验题(15-17)一、将下列词组译成汉语1. kinematic chain（运动链）2. skeleton diagram（草图，示意图，简图）3. Gear system/Cam system（齿轮传动系统/凸轮系统）4. uniform motion/nonuniform motion（匀速运动/非匀速运动）5. nonlinear motion（非线性运动）6. kinematic analysis（运动分析）7. schematic diagram（运动简图）8. textile machinery（纺织机械）9. Kinematic design/ kinematic syntheses （运动设计/运动合成）10. machine design（机械设计）11. Gear trains/ Cam mechanisms（轮系，齿轮传动链/凸轮机构）12. dynamic force/inertia force/ staticforce（动力/惯性力/静力）13. relative velocity/ absolute velocity （相对速度/绝对速度）14. angular acceleration/ tangential acceleration/ centripetal acceleration/ velocity vector（角加速度/切向加速度/向心加速度/速度矢量）15. binary link/ ternary link（二杆组/三杆组）二、将下列短语译成汉语1. Plane and spatial linkages（平面和空间连杆）2. constrained kinematic chain/unconstrained kinematic chain（约束运动链/非约束运动链）3. closed-loop linkage（闭环运动链）4. four-bar linkage（四连杆机构）5. slider-crank (or crank and slider) mechanism（曲柄滑块机构）6. internal combustion engine（内燃机）7. the kinematic analysis of mechanisms（机构运动分析）8. degree of freedom of the mechanism（机构自由度）9. kinematic analysis process /kinematic synthesis process（运动分析步骤/运动合成步骤）10. input angular velocity（输入角速度）11. input angular acceleration（输入角加速度）12. automatic packaging machinery（自动包装机）13. cam-contour dimensions/cam-follower diameters（凸轮轮廓尺寸/凸轮从动件直径）14. mechanical analog computer（机构模拟计算机）15. dead-center position（死点位置）16. crank-rocker linkage/double-rockerlinkage/double-crank (drag-link) linkage （曲柄摇杆机构/双摇杆机构/双曲柄机构）17. maximum force component/ resulting output force or torque（最大的力量组成/输出的最大力或力矩）18. output motion variables/input motion variable（输出运动变量/输入运动变量）19. absolute angular positions（绝对角位置）20. velocity polygon method（速度的多边形的方法）21. instantaneous center method/instant center method（瞬心法/即时瞬心法）22. inertia-force analysis of mechanisms and machines（机构和机器的惯性力分析）23. one and the same coordinate system /inertia frame of reference（惯性参考系）24. systematic design of mechanisms（机械设计的系统）25. cam-contour dimensions/cam-follower diameters（凸轮轮廓尺寸/凸轮从动件直径）三、将下列单词译成汉语11. Mechanism（机械，机构，机构学）2. configuration（外形，构造，结构）3. displacement（位移）4. velocity（速度）5. acceleration（加速度）6. gear（齿轮）7. sprocket（链轮）8. pulley（带轮）9. kinematician /dynamics（运动/动力学，力学）10. kinematician（运动）四．翻译下列句子1. The simplest closed-loop linkage is the four-bar linkage, which has three moving links (plus one fixed link) and four pin joints.（最简单的封闭式的连杆机构就是四杆机构，四杆机构有三个运动构件（加上一个固定构件）并且有四个销轴。
机械工程英语考试题
Review Ⅱ
A distinction may be made between open-die forging, usually in the form of hammer forging, and closed-die forging. ( ) A.自由锻； B.模锻； C.锤锻； D.手工锻. Powder metallurgy is a highly developed method of manufacturing reliable ferrous and nonferrous parts.( ) A.铁的； B.铜的； C.合金的； D.钢的 Injection molding is the predominant process for fabrication of thermoplastics into finished forms. ( ) A.热塑性的； B. 热固性的； C.塑料的； D.耐热的 An estimate showed that about 10 to 15% of all the metal produced in USA was converted into chips. ( ) A.芯片； B. 碎屑； C.成品； D.半成品 It is the angle between the face of the tool called the rake face and the normal to the machining direction. ( ) A.前刀面； B. 后刀面； C.低面； D.侧面
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Grinding can be performed on flat, cylindrical, or even internal surfaces by employing specialized machine tools. ( ) A.机器； B.机床； C.工具； D.夹具 Lapping has two main functions. Firstly, it produces a superior surface finish. ( ) A.表面光洁度； B.表面波度； C.表面精度； D.表面切削量 lathetype－machine tools can be classified as follows: Engine lathes, toolroom lathes, turret lathes, etc. ( ) A.普通车床； B.工具车床； C.立车； D.专用车床 The spindle is driven through the gearbox, which is housed within the headstock. ( ) A.心轴； B.轴线； C.转轴 D.主轴 CIMS is a term to describe the most modern philosophy to manufacturing.( ) A.计算机集成控制系统； B.计算机数控； C.计算机集成制造系统 D.计算机辅助工程
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《机械工程专业英语》测验题(15-17)一、将下列词组译成汉语1. kinematic chain（运动链）2. skeleton diagram（草图，示意图，简图）3. Gear system/Cam system（齿轮传动系统/凸轮系统）4. uniform motion/nonuniform motion（匀速运动/非匀速运动）5. nonlinear motion（非线性运动）6. kinematic analysis（运动分析）7. schematic diagram（运动简图）8. textile machinery（纺织机械）9. Kinematic design/ kinematic syntheses（运动设计/运动合成）10. machine design（机械设计）11. Gear trains/ Cam mechanisms（轮系，齿轮传动链/凸轮机构）12. dynamic force/inertia force/ static force（动力/惯性力/静力）13. relative velocity/ absolute velocity（相对速度/绝对速度）14. angular acceleration/ tangential acceleration/ centripetal acceleration/ velocity vector（角加速度/切向加速度/向心加速度/速度矢量）15. binary link/ ternary link（二杆组/三杆组）二、将下列短语译成汉语1. Plane and spatial linkages（平面和空间连杆）2. constrained kinematic chain/unconstrained kinematic chain（约束运动链/非约束运动链）3. closed-loop linkage（闭环运动链）4. four-bar linkage（四连杆机构）5. slider-crank (or crank and slider) mechanism（曲柄滑块机构）6. internal combustion engine（内燃机）7. the kinematic analysis of mechanisms（机构运动分析）8. degree of freedom of the mechanism（机构自由度）9. kinematic analysis process /kinematic synthesis process（运动分析步骤/运动合成步骤）10. input angular velocity（输入角速度）11. input angular acceleration（输入角加速度）12. automatic packaging machinery（自动包装机）13. cam-contour dimensions/cam-follower diameters（凸轮轮廓尺寸/凸轮从动件直径）14. mechanical analog computer（机构模拟计算机）15. dead-center position（死点位置）16. crank-rocker linkage/double-rocker linkage/double-crank (drag-link) linkage（曲柄摇杆机构/双摇杆机构/双曲柄机构）17. maximum force component/ resulting output force or torque（最大的力量组成/输出的最大力或力矩）18. output motion variables/input motion variable（输出运动变量/输入运动变量）19. absolute angular positions（绝对角位置）20. velocity polygon method（速度的多边形的方法）21. instantaneous center method/instant center method（瞬心法/即时瞬心法）22. inertia-force analysis of mechanisms and machines（机构和机器的惯性力分析）23. one and the same coordinate system /inertia frame of reference（惯性参考系）24. systematic design of mechanisms（机械设计的系统）25. cam-contour dimensions/cam-follower diameters（凸轮轮廓尺寸/凸轮从动件直径）三、将下列单词译成汉语11. Mechanism（机械，机构，机构学）2. configuration（外形，构造，结构）3. displacement（位移）4. velocity（速度）5. acceleration（加速度）6. gear（齿轮）7. sprocket（链轮）8. pulley（带轮）9. kinematician /dynamics（运动/动力学，力学）10. kinematician（运动）四．翻译下列句子1. The simplest closed-loop linkage is the four-bar linkage, which has three moving links (plus one fixed link) and four pin joints.（最简单的封闭式的连杆机构就是四杆机构，四杆机构有三个运动构件（加上一个固定构件）并且有四个销轴。
）2. Although the four-bar linkage and slider-crank mechanism are very useful and found in thousands of applications, we can see that these linkages have limited performance level.( 虽然四杆机构和曲柄滑块机构是非常有用而且在成千上万的应用中都可找到。
但是我们还看到，这些连杆机构其性能水平的发挥已经受到限制。
)3. The process of drawing kinematic diagrams and determining degrees of freedom of mechanisms are thefirst steps in both the kinematic analysis and synthesis process.（画运动图和确定机构自由度的过程，就是运动分析和综合过程的第一个阶段。
）4. The ability to visualize relative motion, to reason why a mechanism is designed the way it is, and the ability to improve on a particular design are marks of a successful kinematician.（设想相对运动的能力，能推想出之所以这样设计一个机构的原因和对一个具体设计进行改进的能力是一个成功的机构学家的标志。
）5. Kinematic inversion is the process of fixing different links of a chain to create different mechanisms.（这个过程的动态反演是固定的,不同的连接创造出不同的机制。
）6.There are three customary tasks for kinematic synthesis: function generation, path generation and motion generation.（对于运功的综合，惯例上有三个任务:函数的生成、轨迹生成和运动生成。
）五．翻译下列短文1.A kinematic chain is a system of links, that is, rigid bodies, which are either jointed together or are in contact with one another in a manner that permits them to move relative to one another. If one of the links is fixed and the movement of any other link to a new position will cause each of the other links to move to definite predictable position, the system is a constrained kinematic chain. If one of the links is held fixed and the movement of any other link to a new position will not cause each of the other links to move to a definite predictable position, then the system is an unconstrained kinematic chain.（运动链是一个构件系统装置即若干个刚体，它们或者彼此铰接或者互相接触，方式上是允许它们彼此间产生相对运动。
如果构件中的某一构件被固定而使任何其他一个构件运动到新的位置将会引起其他各个构件也运动到确定的预期的位置上的话，该系统装置就是一个可约束的运动链。
如果构件中的某一构件仍保持固定而使任一运动到达一新的位置而不会使其他各个构件运动到一个确定的预期的位置上的话，则该系统装置是一个非约束运动链。
）2. A mechanism or linkage is a constrained kinematic chain, and is a mechanical device that has thepurpose of transferring motion and/or force from a source to an output. A linkage consists of links (or bars), 2generally considered rigid, which are connected by joints, such as pin (or revolute) or prismatic joints, to form open or closed chains (or loops). Such kinematic chains, with at least one link fixed, become (1) mechanisms if at least two other links remain mobility, or (2) structures if no mobility remains. In other words, a mechanism permits relative motion between its "rigid links"; a structure does not. Since linkages make simple mechanisms and can be designed to perform complex tasks, such as nonlinear motion and force transmission, they will receive much attention in mechanism study.（机构或连杆构件是一个可约束的传动链而且是一个从输入到输出以传递运动和（或）力为目的的机械装置。