专业英语考试内容
P 139
The issue of manufacturing system flexibility was discussed in previous sections. In that discussion, we identified three capabilities that a manufacturing system must possess to be flexible: the ability to identify and distinguish among the different part or product styles processed by the system;quick changeover of operating instructions; and quick changeover of physical setup.Flexibility is an attribute that applies to both manual and automated systems. In manual systems the human workers are often the enablers of the system's flexibility.
关于制造系统的柔性的问题在前面的章节中已经讨论过。从那我们确定了柔性
制造系统必须具备的三个功能：识别和区分不同的零件或产品样式的能力;快速切换操作命令的功能;快速转换物理设置的能力。柔
性是一种属性，适用于手动和自动系统。在手工系统中通常是工人实现系统柔性。
P142
What CIMS try to do is to integrate all stages in a product life cycle, including taking orders from customers, production planning, product design, process scheduling, NC coding, product testing, sales, service and production management, into a complete (or integrated) information processing system with minimum interference to the operation process by human operators.
CIMS就是尽可能的整合产品生命周期内
的所有阶段，包括客户订单，生产规划，产品设计，进程调度，数控编程，产品测试，销售，服务和生产管理，以最小的人工干扰进入一个完整的信息处理系统的操作过程。P145
The term electrical machining may be applied to a group of processes that employ an electric current or discharge to remove material. Removal of material though an electric current or discharge eliminates the inefficient conversion of electrical power to mechanical power characteristic of conventional machining and metal-deformation processes. The elimination of the mechanical stage also overcomes one difficulty inherent in conventional machining, namely, the increase in tool forces and tool wear encountered when machining the harder metals and alloys used in modern engineering practice.
电火花加工广泛适用于去除材料的工艺过程中。去除材料通过电流或电子束消除在传统加工和材料变形工艺过程中的由电到机械的转换效率。在消除机械转化率低的过程中也克服了另一个传统加工具有问题即解决当加工较硬的材料或用来做模型设计测试的铝合金时增加了道具受力增加和刀具磨损量大的问题。
P147
The widening of machining possibilities. This requires, on the one hand, the improvement of the machinability of materials and, on the other hand,the development of new methods of machining and improvement of the existing ones, as well as the optimization of machining conditions.
不断扩展的制造能力，一方面这一要求提高了
材料的可加工性，另一方面，发展新的加工方法并改进现有的方法，以及优化加工条件。
P149
To assist product sales, a prototype can be used to demonstrate the concept, design ideas, as well as the company's ability to produce it. The reality of the physical model illustrates the feasibility of the design. Also, the prototype can be used to gain customers’ feedback for design modifications so that the fi nal product will meet customers’ requirements.为了协助产品销售，样机
可用于展示概念，设计理念，以及该公司的生产能力。现实的物理模型说明了设计的可行性。此外，样机可以用来获得客户的反馈并
进行设计修改，使最终的产品满足客户的需求。
P153
Mechatronic systems are sometimes referred to as smart devices. While the term smart is elusive in precise definition, in the engineering sense we mean the inclusion of elements such as logic, feedback, and computation which in a complex design may appear to simulate human thinking processes. It is not easy to compartmentalize mechatronic system design within a traditional field of engineering because such design draws from knowledge across many fields. The mechatronic system designer must be a generalist,willing to seek and apply knowledge from a broad range of sources. This may intimidate the student at first, but it offers great benefits for individuality and continued learning during one's career.
机电系统有时也被称为智能设备。但是智能一词是难以捉摸并
准确的定义，在工程意义上，我们指的是其包容的元素，如在一个复杂的模仿人的思维过程可能会出现的逻辑，反馈和计算。机电一体化系统设计在传统的工程领域的内
不容易被划分，因为这样的设计需要多种领域的知
识。机电一体化系统设计人员必须是多面手，愿意寻求广泛的知识来源并运用。这在刚一开始可能会吓到学生，但它带来了个人的巨大利益，而且促使一个人在职业生涯中继续学习。
P155
The Fig. 11. 3 shows an example of a measurement system. The thermocouple is a transducer that converts temperature to a small voltage; the amplifier increases the magnitude of the voltage; the A/D (analog to digital) converter is a device that converts the analog signal to a coded digital signal; and the LEDs (light emitting diodes) display the value of the temperature.
图11.3展示了一个测量系统的例子。热电偶是将温度转换为一个微小电压的换能器，放大器增加了电压，A / D
（模拟到数字）转换器是一种将模拟信号转换成数字信号的
装置;和LED （发光二极管）所显示的温度值。
P169
The engine acts as the power unit. The internal combustion engine is most common; this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine: gasoline (also called a
spark-ignition engine) and diesel (also called a compression- ignition engine). Both engines are called heat engines; the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the transmission.
发动机充当动力装置。 内燃机是最常见的,通过
在发动机气缸燃烧液体燃料获得能量。引擎
有两种类型：汽油发动机（电火花发动机）和柴油发动机
（压燃式发动机）。两种引擎都
称为热引擎,燃烧燃料产生的热量,使气体在气缸内压力增加并为转轴提供动力，转轴连接到传动装置。
P193
Conceptual design is a very fluid process. New ideas and problems emerge as a design is investigated in ever-increasing detail. Each time the latest design is analyzed and sized, it must be redrawn to reflect the new gross weight, fuel weight, wing size, engine size, and other changes. Early wing-tunnel tests often reveal problems requiring some changes to the configuration. The steps of conceptual design are described later in more detail.
概念设计是灵活多变的过程。新思路和新问题出现在
设计日益增长的详细调查中。每次最新的设计分析和大小，都
必须重绘以反映新的总重量，燃油重量，机翼尺寸，发动机大小和其他变化。早期的风洞试验往往揭示结构上需要一些变化的问题。概念设计的稍后步骤将介绍更多细节。
P196
The revised drawing, after some number of iterations, is then examined in detail by an ever-expanding group of specialists each of whom insures that the design meets the requirements of that specialty.
修订后的图纸，经过一些迭代次数，由一个不断扩大的专家小组审查细节，确保其设计符合专业的要求。
P208
The introduction of all-metal, stressed skin aircraft resulted in methods and types of fabrication which remain in use to the present day. However improvements in engine performance and advances in aerodynamics have led to higher maximum lift, higher speeds and therefore to higher wing loading so that improved techniques of fabrication are about 350N/m2 of
1917-1918 aircraft to around 4800N/m2 for modern aircraft coupled with a drop in the structural percentage of the total weight from 30~40 per cent to 22~25 per cent gives some indication of the improvements in materials and structural design.
采用全金属的引入，飞机应力蒙皮导致的制造方法和类
型，到今天仍然在使用。然而，发动机性能的改善和空气动力学的进步提高了
最大升力，更高的速度和更高的翼载荷，因此，这样改进的制造技术使飞机的结构比例从1917-1918的350N/m2到现代飞机的
4800N/m2左右，在材料和结构设计的改进的一些迹象使
飞机结构的总重量的下降30?40％到22?25％。
P228
Traditional MEMS devices are characterized as either sensors or actuators. Sensors generate an electrical signal from physical stimuli such as pressure, acceleration, heat, and radiation. Actuators convert electrical energy to some form of controlled motion. Examples of MEMS sensors include acceleration sensors used for automobile airbag deployment control, pressure sensors mounted on the tip of catheters for use in intracardiac (within the heart) monitoring of blood pressure, and chemical sensors that quantitatively detect gaseous compounds. Examples of MEMS actuators include video display systems using digital mirror devices consisting of over one million individually controlled micromirrors, ink-dispensing nozzles used in inkjet printers, and valves and pumps used in miniature fluidic systems (fluid volumes in the microliter to nanoliter range).
传统的驱动系统为传感器或驱动器。传感器通过
物理刺激，如压力，加速度，热和辐射产生电信号。驱动
器将电能转换成某种形式的控制运动。传感器的例子包括用于汽车安全气囊控制的加速度传感器、安装在导管的尖端用于心脏内血压监测的压
力传感器,和用于定量检测气体化合物的化学传感器。驱
动器的例子包括采用超过一百万个独立控制微镜器件的
视频显示系统，喷墨打印机中使用的油墨分配喷嘴，用于微型流体系统的阀门和泵。P242
Current and emerging robot applications in industry can be categorized on the complexity and requirements of the job. They range from simple, low technology pick-and- place operations through medium technology painting, some assembly and welding operations to high technology precision assembly and inspection operations.
当前和新兴的工业机器人应用根据复杂性和工作要求分类。它们的
范围从技术含量低的拾放操作，中等技术的上色、装配和焊接操作，到高科技精密装配和检验操作。
P259
The root of this identity problem lies in the structured and isolated
approach of various IE courses. This results in specialization that is too narrow. For example, graduates today tend to associate more with focused professional societies rather than the general IE. This is a disturbing drift that may destroy the identity of IE as we now know it.
这个定义难的根源在于各种学科之间结构和方法的独立。这样的结果就是过于狭窄的专业化。例如，今天的大学毕业生往往更关注专业协会，而不是综合的工业工程。这是一个令人不安的现象，可能会彻底破坏工业工程的定义，因为我们现在知道它。
新 全 汽车专业英语期末试卷
汽车专业英语期末试卷 (100分） 一选择题（10分） 1 It does not only have economic effects but also provide C job opportunities A numerous B difficult to count C countless D a lot of 2 the electrical system contains battery light generator, engine ignition .lighting circuit, and various B that control their use A the socket B switches C the charger D battery 3 suspension is the term given to the system of springs . Shock absorbers and B that connects a vehicle to its wheels . A contact B linkages C meet D thing of 4 A solid axle designs utilize springs to soften their inherent harsh ride characteristics , they still bump along like a brick out house. A even though B even if C although D since
5 the frame A two straight pressed steel members, five cross members , the front axle , the rear axle and four wheels A consists of B be made up of C include D reason 二把下面的表达式转化为中文或英文（20分） 1 邮车 mail van 6 sedan 轿车 2 赛车 racing car 7 bumper 保险杠 3 救护车 ambulance 8 lamp 灯 4 越野车 off -road vehicles 9 tire 轮胎 5 洒水车 sprinkler 10 hood 发动机罩 三把下面的简写正确搭配（10分） FWD electrical suspension control system TD Four -wheel drive AT anti -lock brake system ABS turbo diesel ESCS automatic transmission 四写出下面单词的全称及意思 (10分） 1 SUV 运动型多功能用车 sports utility vehicle
机械类常用英语词汇大全
机械类常用英语词汇大全 一字螺丝批 slot type screwdriver 一点透视 one-point perspective 二画 二合一黏合剂 epoxy resin adhesive 二合胶；混合胶 epoxy glue 二维的；平面的 two-dimensional 二进制 binary 二极管；整流子 diode 二号螺丝攻 second tap 二路开关 two-way switch 十进制的；公制的 metric 人工制品 artefact 人造板 man-made board 人体工程学 ergonomics; human engineering 人体尺寸 human dimension 人体测量学 anthropometry; anthropometrics 刀片 blade 刀身 blade 刀具 tool 刀具溜座 carriage 刀柱 tool post 刀架 tool rest 刀架底座 tool rest bracket 刀座帷；床鞍 apron 刀座鞍；溜板座 saddle 力 force 力三角形 triangle of force 力平行四边形 parallelogram of force 力多边形；多边形力学 polygon of force 力的分解 force resolution 力架；亮漆 lacquer 力矩 moment 力偶 couple 力矩定律 law of moment 力-距离图表 force-distance graph 力图 force diagram 力线 line of force 力点 effort 十字榫 cross halving joint 十字螺丝 Philip s head screw 十字螺丝批 Philip s type screwdriver 丁字尺；T 尺 tee square 三画 三爪夹头 three-jaw chuck 三角尺 set square 三角形结构系杆 triangulation tie 三角锉 triangular file 三维的；立体的 three-dimensional 三氯甲烷；哥罗芳 chloroform 三聚氰胺；蜜胺 melamine 三点透视 three-point perspective 上油漆 painting 上釉 enamelling 凡立水 varnish 叉形顶尖 fork centre 口罩 mask 士力；虫漆 shellac 士巴拿；扳手 spanner 大芯夹板；宽条芯夹板 blockboard; solid corestock-laminated board 大量制造 mass production
10级汽车专业英语试卷A
湖北科技职业学院10级汽车英语期末考试———————————————————————————————————— 一、单词互译(每空1 分，共20 分) Section A Directions: This section is to test how many words you know.Please translate english into chinese.(1*10) 1.Vehicle body 2.brake system 3.steering system 4.dash board 5.camshaft 6.Automatic Transmission 7.inlet valve 8.timing belt 9.cylinder 10.electronic controller Section B Directions: This section is to test how many words you know.Please translate chinese into english .(1*10) 1. 底盘2后悬架 3．转向盘 4 发动机 5 分电器6油底壳 7 活塞8 轴承 9手动变速器10冷却系统 二、阅读与理解（20题，每题2分，共40分） Part 1 The engine is the source of power that makes the wheels go around and the car move. The automobile engine is an internal combustion engine because the fuel (gasoline) is burned inside it. The burning of gasoline inside the engine produces high pressure in the engine combustion chamber .This high pressure forces piston to move, the movement is carried by connecting rods to the engine crankshaft. The crankshaft is thus made to rotate: the rotary motion is carried through the power train to the car wheels so that they rotate and the car moves. What do we see from the first paragraphs? ( ) The engine is source of power for a car. The engine can not make wheels go around. The engine is resource of oil. Which one Statement is true according the above first paragraph? ( ) The automobile engine is an international combustion engine. The automobile engine is an external combustion engine. The automobile engine is an inner combustion engine What do we see from the second paragraphs? ( ) High pressure is source of power inside a engine. Crankshaft is rotated without any force. Combustion chamber is not a part of the engine. Which one Statement is true according the above second paragraph? ( ) The movement of piston is carried by connecting rods to the engine crankshaft.
汽车专业英语期末考试题型说明
Terminal Reviews to English for the Automotive Profession I. Answer the following questions.(20%) Choose 5 of 6, 4 points for each, total in 20 points. 1. What does the drive train consist of? The drive train consists of clutch, transmission, driveshafts, differentials, and the final drive (drive wheels, continuous track like with tanks or Caterpillar tractors, propeller, etc.). In a wider sense, the drive train includes all of its components used to transform stored (chemical, solar, nuclear, kinetic, potential, etc) energy into kinetic energy for propulsion purposes. 2. How to install the drive gear? First, clean the drive gear attaching bolts. Second, remove the adhesive adhered to the threaded holes of the drive gear by turning the special tool, and then clean the treaded holes by applying compressed air. Third, apply the specified adhesive to the threaded holes of the drive gear. Forth, install the drive gear onto the differential case with the mating marks properly aligned. Tighten the bolts to the specified torque in a diagonal sequence. 3. What is the process of the ABS working? The Anti-lock Brake System (ABS) uses a sensor that know when one wheel (or a pair of wheels) is skidding. The sensor sends a signal to a computer, which signals a modulator valve. The modulator connects into the hydraulic system and can momentarily release the brake pressure and prevent the wheels from locking. (The pressure release is so fast that a driver is seldom aware of it.) Pressure is then reapplied until the sensor again sensor that the wheel is about to lock up. Thus, this system keeps the wheels as colse to lock up as possible, without actually allowing the wheels to lock up and skid. This is called incipient lock up. Maximum braking occurs at that point. 4. What is the purpose of gear reduction from steering gear? The gear reduction is known as steering gear ratio. This is needed to reduce the amount of effort required to turn the steering wheel, particularly when parking. During straight-ahead driving, this also reduces the possiblility of oversteering. The ratios vary considerably, depending largely on vehicle size and weight. Larger, heavier vehicles require a graeter reduction in manual steering gears. 5. How does the starter clutch work? The purpose of the starter clutch is to engage and disengage the pinion gear from the flywheel. When the starer is cranking, the pinion gear slides on the armature shaft and engages the flywheel. 6. How to check DTC in the normal mode? First, turn ignition switch off. Second, connect terminals TE1 and E1 of data link connector 1 or 2. Third, Turn ignition switch on. Forth, read the diagnostic trouble code on malfuntion indicator lamp on the combination meter. Fifth, afer completing the check, turn ignition switch off and disconnect terminals TE1 and E1. II. Translate the following into Chinese. (20%) Choose 20 of 30, 1 points for each, total in 20 points. 1. drive train 动力传动系 2. suspension system and axle 悬挂系统和驱动桥 3. brake system 制动系统 4. steering system 转向系统
数学专业英语期中测试
数学专业英语期中测试要求 将下列论文的摘要翻译为英语（按照学号顺序每个人分一个题目）。标题字体为黑体，字号三号，“摘要”二字以及“关键字”三字黑体，字号小四，其它字体为宋体，字号小四。行间距都为1.5倍行距。每人把自己要翻译的中文拷贝下来，然后在后面把它翻译为英文(英文字号与中文一样，字体为Times new roman，黑体的地方改为加粗)，写上姓名，学号（格式如下面的例子），打印出来交给我。大家认真做一下，你们写毕业论文要用到，学一学怎样写规范的文章，包括文章的排版（上学期反复强调交给我的matlab程序的打印的格式，结果有人交给我的程序竟然有上百页，字体很大，行距很大，还单面打印！（按照要求做的话只要几页就够了）有些人老是听不进老师讲的话！这样做既劳民伤财又不利于存档）。大家做好以后交到学习委员处，学习委员收齐以后交来给我，期末之前给我就行。 例子 中文标题 （姓名：学号：） 摘要 这是摘要正文…… …… 关键字：关键字1；关键字2；关键字3 English title （name: ,student id: ） Abstract This is the content of the abstract…… …… Keywords: keywords1; keywords2; keywords3;
1.泰勒公式的证明及其应用 摘要 本文先叙述并证明了不同条件下的泰勒公式，并进行了比较。然后讨论了泰勒公式在不同领域中的应用。本文着重论述了带有积分余项，拉格朗日余项和佩亚诺余项三种形式的泰勒公式，并比较了带不同余项的泰勒公式的异同。泰勒公式是数学分析中的重要知识，在理论分析和实际中都有广泛的应用。本文讨论了泰勒公式在10个方面的应用：利用泰勒公式求极限和导数，求无穷远处极限，证明中值公式，中值点的极限，证明不等式，导数的中值，估计关于界的估计，方程中的应用以及在近似计算中的应用。 关键词：泰勒公式；积分余项；佩亚诺余项；拉格朗日余项 2.论中学数学学习中的性别差异及其对成绩的影响 摘要 通过对初、高中两所学校男女学生数学成绩的调查，从智力、非智力、教育、社会环境等方面差异进行分析研究，得出性别差异对学生数学成绩有影响，并且随着年级的升高，男女生的数学成绩存在显著的差异。并提出了提高女生数学成绩应注意的几个方面。 关键词：中学生性别差异数学成绩因性施教 3.论在数学教学中培养学生的创新精神 摘要
机械专业中英文对照(完整版)1
机械专业英语词汇 陶瓷ceramics 合成纤维synthetic fibre 电化学腐蚀electrochemical corrosion 车架automotive chassis 悬架suspension 转向器redirector 变速器speed changer 板料冲压sheet metal parts 孔加工spot facing machining 车间workshop 工程技术人员engineer 气动夹紧pneuma lock 数学模型mathematical model 画法几何descriptive geometry 机械制图Mechanical drawing 投影projection 视图view 剖视图profile chart 标准件standard component 零件图part drawing 装配图assembly drawing 尺寸标注size marking 技术要求technical requirements 刚度rigidity 内力internal force 位移displacement 截面section 疲劳极限fatigue limit 断裂fracture 塑性变形plastic distortion 脆性材料brittleness material 刚度准则rigidity criterion 垫圈washer 垫片spacer 直齿圆柱齿轮straight toothed spur gear 斜齿圆柱齿轮helical-spur gear 直齿锥齿轮straight bevel gear 运动简图kinematic sketch 齿轮齿条pinion and rack 蜗杆蜗轮worm and worm gear 虚约束passive constraint 曲柄crank 摇杆racker 凸轮cams 共轭曲线conjugate curve 范成法generation method 定义域definitional domain 值域range 导数\\微分differential coefficient 求导derivation 定积分definite integral 不定积分indefinite integral 曲率curvature 偏微分partial differential 毛坯rough 游标卡尺slide caliper 千分尺micrometer calipers 攻丝tap 二阶行列式second order determinant 逆矩阵inverse matrix 线性方程组linear equations 概率probability 随机变量random variable 排列组合permutation and combination 气体状态方程equation of state of gas 动能kinetic energy 势能potential energy 机械能守恒conservation of mechanical energy 动量momentum 桁架truss 轴线axes 余子式cofactor 逻辑电路logic circuit 触发器flip-flop 脉冲波形pulse shape 数模digital analogy 液压传动机构fluid drive mechanism 机械零件mechanical parts 淬火冷却quench 淬火hardening 回火tempering 调质hardening and tempering 磨粒abrasive grain 结合剂bonding agent 砂轮grinding wheel 后角clearance angle 龙门刨削planing 主轴spindle
机械专业英语
statics and dynamics静动/ journal bearing 径向/ rolling bearing滚动/ stress and strain应力和应变/Strengh of materials材料的强度Shaft轴/coupling连接器/ equivalent load 等效载荷/ stress concentration应力集中/ critical speed临界速度/ rigid coupling刚性连轴器/ flexible coupling挠性联轴器/cotter pin开口销/load limit复合极限/elastic deflection弹性变形thrust bearing推力轴承/ taper roller bearing圆锥滚子轴承/mating surface配合面/Internal spline内花键Lathe车床/headstock主轴箱/tailstock尾架/carriage溜板/leadscrew丝杠/feed rod光杠/engine lathe普通车床/slider-crank mechanism曲柄滑块机构/epicyclic gear行星齿轮/Gear broaching拉齿dimensional tolerance尺寸公差/surface roughness表面粗糙度/upper deviation上偏差/lower deviation下偏差/clearance fit间隙配合/interference fit过盈配合/transition fit过度配合 缩写词：N.C. numerical control数控CAD computer aided design CAE computer aided engineering工程CAM computer aided manufacturing制造/Mechanical Designing-Manufacturing and Automation 机械设计制造及其自动化/Machine design机械设计/mechanical theory机械原理/Engineering drawing工程制图 机床的种类：lathes车床,boring machine镗床,milling machine铣床,planers and shapers刨床和牛头刨床,broaching machines拉床,drilling machines钻孔机 选择连接件时考虑哪些因素：primary function基本功能,appearance外观,a large number of small size fasteners versnus a small number of larger size fasteners对于采用大量的小型连接件还是采用少量的大型连接件的确定,operating condition such as vibration loads and temperature诸如载荷、振动和温度等工作条件,frequency of disassembly装拆频率,adjustability in the location of parts零件位置的可调性,types of materials to be joined被连接零件的材料种类,consequences of failure of loosening of the fastener连接件失效或者松脱造成的后果 弹用途：control of motion in machines控制机构互动,reduction of transmitted forces as aresult of impact of shock loading缓冲减震,storage of energy储存能量,measurement of force测量力的大小 摘要包含哪些内容：state the principal objectives and scope of the investigation阐述该项目研究工作的主要目的和范围，describe the methodology employed描述所使用的方法，summarize the results 总结研究成果，state the principal condusions阐述主要结论 科技论文包括哪些内容：title标题，fact vs opinion事实与意见，the abstract摘要，analysis分析，results and discussion结果和讨论，appendixes附录，important information重要信息，tense,the introduction介绍，experimental procedure实验过程，condusions结论. In addition the shaft must be able to sustain a combination of bending and torsional loads. Thus an equivalent load must be considered which takes into account both torsion a factor of safety which includes fatigue, since torsional and bending stress reversals occur.此外，轴还必须能够承受弯矩的当量载荷。因为扭矩和弯矩会产生交变应力，在许用应力中也应该有一个考虑疲劳现象的安全系数。 Removable. This type permits the parts to be readily disconnected without damaging the fastener. An example is the ordinary nut-and-bolt fastener.可拆式，采用这种方式连接的零件很容易被拆开，而且不会对连接件造成损伤。例如普通的螺栓螺母连接件。 Semipermanent.For this type, the parts can be disconnected ,but some damage usually occurs to the fastener. One such example is a cotter pin .半永久式，采用此类方式连接的零件虽然能被拆开，但通常会对所有的连接件造成损伤。 Permanent. When this type of fastener is used,it is intended that the parts will never be disassembled. Examples are riveted and welded joints.永久式，采用这种连接件就表明所连接的零件不会被分开，例如铆接和焊接。 Design can be based on accepted values of life and it is general practice in the bearing industry to define the load capacity of the bearing as that value below which 90 percent of a batch will exceed a life of one million revolutions.轴承设计是机于能够被人们所承受的寿命来进行的。在轴承行业中，通常将轴承的承载能力定义为这样的值，即所承受的载荷小于这个值时，一批轴承中将会有90%的轴承具有超过一百万的寿命。 Gear hobbing ,the most used metal cutting method,uses the rack generating principle but avoids show reciprocation by mounting many “racks”on a rotating cutter . The “racks”are displaced axially to form a gashed worm (fig.29.3). The gear hobbing process is shown in fig.29. 滚齿是最常见的金属切削方法。它采用齿条展成原理，但是通过安装在旋转刀具上的许多“齿条”来避免缓慢的往复运动。这些“齿条”轴向排布，形成了开槽的蜗杆（见图29.3），滚齿加工过程如图29.4所示。 There are three methods of specitying tolerances on dimensions:unilateral, bilateral, and limit forms. When plus-or-minus tolerancing is used, it is applied to a theoretical dimension called the basic dimension . When dimensions can vary in only one direction from the basic dimension (either larger or smaller )tolerancing is unilateral. Tolerancing that permits variation in both directions from the basic dimension (larger and smaller)is bilateral, tolerances may also be given in limit form, with dimensions representing the largest and smallest sizes for a feature.有三种表示尺寸公差的方式：单向，双向和极限方式。当采用正负公差时，就将公差加到被称为基本尺寸的理想尺寸上去。当只允许尺寸向基本的单一方向（或者变大或者变小）的变动时，就是单向公差。当尺寸在基本尺寸的两个方向（变大或者变小）都可以变动时，公差就是双向的。公差也可以用极限形式给出，表示零件的最大和最小尺寸。
汽车专业英语+白虎成 西华大学成人高等教育课程考试试题库
西华大学成人高等教育课程考试试题库 课程名称：汽车专业英语适用于： 17秋中汽1、2、3、4班 一、选择题（每题2分,总分50分） 1. The heart of automobile is（）. A engine B body C chassis D electric system 2.An engine is mainly composed of two mechanisms and（）systems A one B five C four D six 3.（）holds all the main components and parts together A engine B body C chassis D clutch 4. The power train carries （）from the engine crankshaft to car wheels A power B body C engine D clutch 5.In 1886 ,Karl Benz（）the first car in the word . A find B compose C built D buy 6.Today, more and more modern car are equipped with a variety of（）devices A power B electronic B switch D transmission 7.Engine is a self-contained （）unit vehicle A power B body C engine C device 8.The engine has（）of other parts . A eighty B ninety C sixty D hundreds 9.The intake stroke begins with the piston at the（） A BDC B MB C D TDC D CMP 10.Just before the bottom of power stroke , the exhaust valve C A ups B downs C closes D open 11.The body is designed to keep passengers（）and comfortable. A look B safe B like D discuss 12.The （）provides power to move the automobile. A piston B transmission C clutch D engine 13.The transmission delivers the power to the （）. A engine B differential C chassis D generator 14.Reducing friction to minimize wear and loss of power is （）the job a lubrication system must perform. A easy B primary C comfortable D leisurely 15.Most automobile engines operate on the （）stroke-cycle principle A one B two C three D four 16.The cooling system keeps the engine running at its most （）temperature A low B constant C high D efficient 17.The spring of radiator cap determines the （）pressure in the cooling system. A long B wide C maximum D minimum 18 .Oxygen Sensor is mounted into the （）manifold area. A exhaust B intake C valve D block 19.Oxygen sensor is employed in （）loop systems to modify the basic pulse width after the fact. A small B big C closed D opened 20.Most vehicles today use （）injector per cylinder. A one B two C three D four
江西理工大学数学专业英语考试重点2
一、数学符号翻译 12/156 twelve over one hundred and fifty-six 234/567 two hundred and thirty -four over five hundred and sixty-seven 4% four percent 7‰ seven permill 6.79 six point seven nine 52.3 three point two five recurring 85x the eighth root of x to the fifth power 53 x x to the minus three fifths dx x f b a )( f is integrable on [a,b] 32)(dx x f f is integrable on [2,3] x f the partial (derivative) of f with respect to x y f the partial (derivative) of f with respect to y 5lo g 3 the logarithm of five to the base three x a log the logarithm of x to the base a B A A cap B / A meet B / A intersection B B A A cup B / A join B / A union B A a a is an element of A B b b is an element of B 二、名词翻译 function theory 函数论 schematic representation 图解表示 geometry 几何学 trigonometry 三角学 consequence 推论 proposition 命题 theorem 定理 pyramid 棱锥 cone 圆锥 abscissa 横坐标 ordinate 纵坐标 coordinate system 坐标系 coordinate axis 坐标轴 polygonal region 多边形区域 tangent 切线 slope 斜率 complex-valued sequence 复值序列 convergence 收敛 real valued sequence 实值序列 divergence 发散 rational number 有理数 irrational number 无理数 odd number 奇数 even number 偶数 prime 质数、素数 composite 合数 plane 平面 surface 曲面 broken line 折线 Venn diagram 文氏图 universal set 全集 the underlying set 基础集 proper subset 真子集 quadratic equation 二次方程 the absolute-value function 绝对值函数
机械专业英语词汇汇总
机械专业英语词汇（大全） 金属切削metal cutting 机床machine tool 金属工艺学technology of metals 刀具cutter 摩擦friction 联结link 传动drive/transmission 轴shaft 弹性elasticity 频率特性frequency characteristic 误差error 响应response 定位allocation 机床夹具jig 动力学dynamic 运动学kinematic 静力学static 分析力学analyse mechanics 拉伸pulling 压缩hitting 剪切shear 扭转twist 弯曲应力bending stress 强度intensity 三相交流电three-phase AC 磁路magnetic circles 变压器transformer 异步电动机asynchronous motor 几何形状geometrical 精度precision 正弦形的sinusoid 交流电路AC circuit 机械加工余量machining allowance 变形力deforming force 变形deformation 应力stress 硬度rigidity 热处理heat treatment 退火anneal 正火normalizing 脱碳decarburization 渗碳carburization 电路circuit 半导体元件semiconductor element 反馈feedback 发生器generator 直流电源DC electrical source 门电路gate circuit 逻辑代数logic algebra 外圆磨削external grinding 内圆磨削internal grinding 平面磨削plane grinding 变速箱gearbox 离合器clutch 绞孔fraising 绞刀reamer 螺纹加工thread processing 螺钉screw 铣削mill 铣刀milling cutter 功率power 工件workpiece 齿轮加工gear mechining 齿轮gear 主运动main movement 主运动方向direction of main movement 进给方向direction of feed 进给运动feed movement 合成进给运动resultant movement of feed 合成切削运动resultant movement of cutting 合成切削运动方向direction of resultant movement of cutting 切削深度cutting depth 前刀面rake face 刀尖nose of tool 前角rake angle 后角clearance angle 龙门刨削planing 主轴spindle 主轴箱headstock 卡盘chuck 加工中心machining center