机电专业英语
机电一体化专业英语全套教学课件
长春汽车工业高等专科学校
Unit 1 Passage A
Lathe Accessories
Brass Round Stock (铜质圆料) Brass is a nice material to work with, though somewhat expensive compared with aluminum or steel. It can add a nice touch of contrasting color to a project that will be displayed. The alloy most often used for home shop work is 360.
Poor quality drills are easy to find, but they are truly a waste of money. That‘s not to say that you need to buy top quality industrial drills. It’s not always easy to tell a good drill bit from a poor one just by looking and, of course, its even harder if all you have is a picture on a web site or in a catalog. Generally, though, the lowest priced drill sets are the ones to stay away from.
机电仪类专业英语题库
F F1327C256 is a CMOS 256K bit EPROM. The device is organized as 32K words by 16 bits .T T63A disadvantage of connecting lamps in series is that if one lamp blows all of them will go out because the circuit is broken.T T43A lamp may be used to test a rectifier diode, but do not use a lamp to test a signal diode because the large current passed by the lamp will destroy the diode!T T21 A PIC is a Programmable Integrated Circuit microcontroller, a 'computer-on-a-chip'.F F101 A products made of interchangeable parts is slowly assembled, higher in cost.T T68 A relay is an electrically operated switch.T T100 A resistor placed in a circuit will resist the passage of electrical current through it.T T94 A thermistor is an input transducer (sensor) which converts temperature (heat) to resistance. T T99 A transformer consists of two coils (often called 'windings') linked by an iron core.T82A transistor may be used as a switch (either fully on with maximum current, or fully off with no current) and as an amplifier (always partly on).T4 A warning notice has to be set up on the equipment while repairing.F46All rectifier diodes are made from silicon and therefore have a forward voltage drop of 0.2V.T98An audio (AC) signal with a constant DC signal will make a large current flow through the Loudspeaker due to its low resistance, possibly damaging both the speaker and the driving circuit.F105Automatic control systems are a product of this generation.T6Be careful not to damage or scar the inner surface finish of the bottom sub.T133Before logging, inspect the cable drum assembly for apparent damage or cracked welds.T131Before starting engine ,we must check the batteray cables and terminals for corrosion or loose connection. F111Cams are the most versatile lathe.T34Capacitors are also used in filter circuits because capacitors easily pass AC (changing) signals but they block DC (constant) signals.T33Capacitors are used to smooth varying DC supplies by acting as a reservoir of charge.T32Capacitors store electric charge.T8Check the cable and wire for proper connections both before and after repair.F125Checking the engine oil level,we don't wipe dipstick clean ,we can get a good reading.F67Connecting several LEDs in parallel with just one resistor shared between them is generally a good idea.T69Current flowing through the coil of the relay creates a magnetic field which attracts a lever and changes the switch contacts.F28Current is measured with an voltmeter, connected in series.T27Current is the rate of flow of charge.T31Currents add up for components connected in parallel.T29Currents are the same through all components connected in series.T57Datasheets are available for most ICs giving detailed information about their ratings and functions. F39Diodes allow electricity to flow in two directions.T77Electrical energy is converted to heat when current flows through a resistor.F14EPROM can be read and writen.F112Form the fits point of view, a key is referred to as the hole and the keyway as the shaft.T44General purpose signal diodes such as the 1N4148 are made from silicon and have a forward voltage drop of 0.7V. T124Going downhole,screw the adjustable uphole torque control valve fully clockwiseF150Heat treatment can decrease material Hardness.T149Heat treatment can increase material Hardness.F103High carbon steel is softer than tempered steel, but it is much more easier to work.T128Hot exhaust system parts can cause serious bodily injury.F114Hot working is defined as plastic deformation below the recrystallization temperature.T121Hydraulic oil temperature is controlled by the thermostatic bypass valve and hydraulic system heat exchanger.T141Hydrostatic charge fluid pressure is measured by the CHARGE PRESSURE GAUGE.T88IC (chip) pin diagrams show the view from above.T54ICs (chips) are easily damaged by heat when soldering ,so we usually use an IC holder(socket).T135If any fuel leaking are found above exhaust system, shut down engine immediately and repair.F118If hoist parking brake control knob is pushed,the brake bands located on each side of the hoist drum tighten and hold the drum.T126If the engine oil level has reached between the high and low mark,the engine oil level is normal.F110If the follower lose contact with the cam, it will natural work.T134If there is no engine oil pressure or low engine oil pressure, stop the engine immediately.T55If you need to remove an IC it can be gently prised out of the holder(socket) with a small flat-blade screwdriver.T85In addition to standard (bipolar junction) transistors, there are field-effect transistors which are usually referred to as FETs.T130Inspect the engine radiator , insure that core is clean and free of debris.T129Inspect the engine radiator cap, verify that the seals and spring are good.T5Install the retaining ring in the bottom sub using the modified pliers.T52Integrated Circuits are complex circuits which have been etched onto tiny chips of semiconductor (silicon). T51Integrated Circuits are usually called ICs or chips.T36It is easy to find the value of electrolytic capacitors because they are clearly printed with their capacitance and voltage rating.T9It is forbidden that using a high-volt insulation tester to measure circuit insulation T113It is important that the product be designed with material.F24It is impossible to have voltage without current, current cannot flow without voltage.F75kF61Lamps can not be connected either way round in a circuit.T59Lamps emit light when an electric current passes through them.T64LEDs means Light Emitting DiodesF65LEDs need not a resistor in series to limit the current to a safe value for testing it.T58Logic ICs process digital signals and there are many devices, including logic gates, flip-flops, shift registers, counters and display drivers.T97Loudspeakers are output transducers which convert an electrical signal to sound. T115Machine parts are maunfactured so they are interchangeable.T102Materials differ widely in physical properties,machinability characteristics,methods of Forming,and possibe service life.T80Multi-way switches have 3 or more conducting positions.T17Normally,the TTL IC use the 5Vdc power supply.T79ON-OFF SPST switch means Single Pole, Single ThrowT15Operational amplifier can be used as a part of an active filter.F96Piezo transducers are output transducers which convert an electrical signal to heat.F87Please note that transistor lead diagrams show the view from top with the leads towards you.T123Pre-start checks,make sure the drum brake is on and both hoist control lever are in the neutral position. T41Rectifier diodes are quite robust and no special precautions are needed for soldering them.T45Rectifier diodes are used in power supplies to convert alternating current (AC) to direct current (DC), a process called rectification.F71Relays and transistors compared ,relays can only switch DC, transistors can switch AC and DC. F127Remove the engine radiator cap when engine is running.T76Resistors in Parallel will get a smaller value.T73Resistors may be connected either way round. They are not damaged by heat when soldering.F72Resistors restrict the flow of electric voltage.T11Rig safety can be improved by using MWD measurements in real time to avoid potentially dangerous well control problems.F62Several lamps can be successfully connected in parallel provided they all have identical voltage and power (or current) ratings.T104Smooth flat belts and V belts depend on friction on the pulleys and some slippage is inherent in their operation.T12Sperry-Sun’s FEWD measurements can be used in horizontal wells to steer a well for maximum formation exposure in the productive part of the reservoir.T56Static sensitive ICs will be supplied in antistatic packaging with a warning label.F78Switch contacts are rated with a maximum voltage and current, and there should be same ratings for AC and DC. F106The all material may have higher strength.T83The amount of current amplification of a transistor is called the current gain, symbol h FE.T47The bridge rectifier have four leads or terminals: the two DC outputs are labelled + and -, the two AC inputs are labelled "～".F22The CMOS circuitry used in the 74HC series ICs means that they are static sensitive. Touching a pin while charged with static electricity is always safe.T66The colour of an LED is determined by the semiconductor material, not by the colouring of the 'package' (the plastic body).F132The drum bearing don't need to be greased separately T109The element must be kept stiff and rigid.T122The engine must be shut down immediately if the water temperature gauge registers higher than normal coolant temperatures.T140The ENGINE STOP CONTROL is used to stop the flow of diesel fuel to the engine.T139The ENGINE THROTTLE CONTROL increases and decreases the speed of the diesel engine.T137The FREQUENCY METER measures the frequency of the diesel generator.T90The heat sink of power transistor helps to dissipate (remove) the heat by transferring it to the surrounding air. F117The hoist control lever have two positions,uphole and downhole.F1The hoist in the worker-house can be used by everyone to move the logging tools.F20The Input Impedance of FET transistor is very low.T18The Intel 87C51 is a single-chip control-oriented microcontroller which is fabricated on Intel's reliable CHMOS EPROM technology.F143The machine for manufacture charge holder tube is CNC lathe.T144The machine for manufacture charge holder tube is laser cutter machining.T148The material Hardness commonly denotes "Rockwell hardness " or "Brinell hardness".T146The material mechanical properties of perforating gun include: Tensile Strength,Yield Strength,Elongation,Reduction of Area,Hardness etc.F147The material mechanical properties of perforating gun only include Tensile Strength.T142The material of charge holder tube is welder tubing.F19The negtive pulse makes the resistance between pin D and pin S of N-Channel MOSFET very low. F3The O-Ring oil can be replaced by thread compound.F138The output voltage of diesel generator is normally 120V DC.T145The perforating gun can match charges including deep perforate, super deep, big hole, super big hole and low debris or no debris types.F53The pins of ICs are numbered clockwise around the IC (chip) starting near the notch or dot.T119The speed range control switch has no effect over the back-up hoist control.T136The SPEED RANGE CONTROL SWITCH is used as a course speed adjustment by the operator.F108The surface and the pitch circle and the bottom of the tooth.T60The voltage and power (or current) ratings are usually printed or embossed on the body of a lamp.T35There are many types of capacitor but they can be split into two groups, polarised and unpolarised F84There are two types of all transistors, NPN and PNP.T95Thermistors with a negative temperature coefficient (NTC) means their resistance decreases as their temperature increases.T16These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.T10Thread protectors should always be installed when transporting instrument to aid in securing or handling tool. T70Transistors and ICs must be protected from the brief high voltage produced when a relay coil is switched off.F81Transistors are used to amplify current only.F89Transistors can not be damaged by heat when solderingF86Transistors have three leads which be connected no matter the way round.F37Unpolarised capacitors are small value and must be connected correct way round.T38Variable capacitors are mostly used in radio tuning circuits and they are sometimes called 'tuning capacitors'. T93Variable resistors are often called potentiometers in books and catalogues.T92Variable resistors consist of a resistance track with connections at both ends and a wiper which moves along the track as you turn the spindle.T23Voltage and Current are vital to understanding electronics, but they are quite hard to grasp because we can't see them directly.F25Voltage is measured with a voltmeter, connected in series.F30Voltages are the same across all components connected in series.T107We can alter the characteristics of steel in various ways.T116We can alter the characteristics of steel in various ways.F120we increase engine throttle control,the injectors will be delived little amount of fuel.T7We must apply Lubriplate to the threads of the pressure housingF40When a reverse voltage is applied a perfect diode does not conduct, no diodes leak current .F2When we make the insulate check,either megger or multimeter can be used.T T91You can use a multimeter or a simple tester (battery, resistor and LED) to check the transistorF F42You can use a multimeter or a simple tester (battery, resistor and LED) to check that a diode conducts in two directions.F F74You may have noticed that resistors are available with every possible value.T T49Zener diodes are designed to 'breakdown' in a reliable and non-destructive way so that they can be used in reverse to maintain a fixed voltage across their terminals.T T48Zener diodes are used to maintain a fixed voltage.F F50Zener diodes can not be distinguished from ordinary diodes easily .T T26Zero volts could be any point in the circuit, but to be consistent it is normally the negative terminal of the battery or power supply.判断题答案序号中中难难易中中中中中难难易中难易中难中中易中易易易易易易中中中中易难易易中易易中易易难中中中易难难难易易中易中易中中难中易易易易易中中易易难中中中易中难易中中难易易难易中易难中中易易难中易中难难易中难难易程度。
机电专业英语第2版3Unit 3 Machine Tools 机床教材
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Text 机电专业英语徐存善主编
Drilling
Drilling is performed with a rotating tool called a drill. Most drilling in metal is done with a twist drill. The machine used for drilling is called a drill press. Operations, such as reaming and tapping, are also classified as drilling. Reaming consists of removing a small amount of metal from a hole already drilled. Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt may be threaded into it.
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Text 机电专业英语徐存善主编
Turning and Boring
The lathe is commonly called the father of the entire machine tool family. For turning operations, the lathe uses a single-point cutting tool, which removes metal as it travels past the revolving workpiece. Turning operations are required to make many different cylindrical shapes, such as axes, gear blanks, pulleys, and threaded shafts. Boring operations are performed to enlarge, finish, and accurately locate holes.
机电专业英语U3 Listening
Answer: Steven→3, 5, George → 2, 4, Mr. Cox → 1
❖ Script
George: Hello, this is George White. Speaking, please.
Steven: Good afternoon, Mr. White. This is Steven Baker, a designer of Cascade Elevator Company.
Peter: Oh! That means I will do the 7 _m_a_rk_e_t _re_s_e_ar_c_h__ and make concept sketches.
Steven: Also you can 8 _co_n_t_ri_bu_t_e_ the concept color renderings (色彩效果图).
George: He mentioned that to me. I know you are very experienced.
Task 2 Peter, an intern of Cascade Elevator Company, wants to join the
project of designing the elevator system for Carlson Real Estate. Listen to the conversation and fill in the blanks with what you hear.
√D. Because the shuttle elevators cannot meet his requirement.
❖ Script
Steven: Mr. White, up to now, we have finished the first stage of our design. How do you think of our market research and concept sketches? George: Well, basically we are satisfied with your work, but... Steven: Go ahead. I’m all ears. George: The market research is quite all right. For the concept sketches, how did you generate them? Steven: Oh, we had a lot of brainstorming. Our designers often sketched as ideas and concepts were contributed. George: Good. Judging from the sketches, we think it can be called an efficient elevator system. Steven: We have taken it into account that the first five floors will serve as a shopping mall. George: OK. Anyway, we hope it can also meet the handling capacity requirements of tenancy. Steven: There are several shuttle elevators that may meet the requirements. George: Be sure these shuttle elevators are of large-capacity and high-speed. Steven: We’ll make some improvements to meet your demand.
机电工程专业英语第2版
机电工程专业英语第2版Title: The Evolution and Applications of Electromechanical Engineering.Electromechanical engineering, a discipline that merges the fields of electrical engineering and mechanical engineering, has undergone significant advancements in recent years. This融合 of two crucial engineering branches has led to the development of innovative technologies and solutions in various industries.The foundation of electromechanical engineering lies in the understanding of both electrical and mechanical systems. Electrical systems deal with the generation, transmission, and utilization of electrical energy, while mechanical systems focus on the design, analysis, and maintenance of machines and equipment. By combining these two domains, electromechanical engineers are able to create systems that are not only efficient but also reliable.One of the most significant advancements in electromechanical engineering has been the integration of automation and robotics. With the increasing demand for precision and efficiency in manufacturing processes, the role of robots and automated systems has become paramount. Electromechanical engineers are responsible for designing and maintaining these systems, ensuring their seamless operation and optimal performance.Moreover, the integration of sensors and actuators has further enhanced the capabilities of electromechanical systems. Sensors are devices that detect and respond to external stimuli, while actuators convert energy into motion. By incorporating these devices into electromechanical systems, engineers can achieve precise control over various mechanical processes, leading to improved productivity and reduced waste.Another noteworthy advancement in electromechanical engineering is the increasing use of renewable energy sources. As the global focus shifts towards sustainable development, the integration of renewable energy systemsinto electromechanical designs has become crucial. Engineers are now exploring innovative ways to harness solar, wind, and other renewable energy sources, converting them into useful mechanical energy.In addition, the rising demand for smart and connected devices has also influenced the evolution of electromechanical engineering. The integration of sensors, actuators, and communication technologies into electromechanical systems has led to the development of smart devices that can communicate with each other and respond to external stimuli. This has opened up a wide range of applications in areas such as smart homes, smart cities, and工业自动化.Moreover, the increasing complexity of electromechanical systems has led to the development of advanced simulation and modeling tools. These tools allow engineers to simulate and analyze the behavior of electromechanical systems under different conditions, enabling them to predict and optimize their performance. This has significantly reduced the time and cost associatedwith the design and development of electromechanical systems.In conclusion, the evolution of electromechanical engineering has been driven by the increasing demand for efficiency, reliability, and sustainability. Theintegration of automation, robotics, sensors, actuators, renewable energy sources, and smart technologies has led to the development of innovative solutions in various industries. As technology continues to advance, the role of electromechanical engineers will become even more crucial in driving the development of efficient and sustainable systems.。
机电类专业专业英语
Unit 1 MetalsThe use of metals has always been a key factor in the development of the social systems of man.在人类社会的发展中，金属的应用一直起着关键的因素Of the roughly 100 basic elements of which all matter is composed, about half are classified as metals 构成物质的大约100多种元素中，大约有一半为金属元素。
The distinction between a metal and a nonmetal is not always clear-cut.金属和非金属之间的区别并不是很明显The most basic definition centers around the type of bonding existing between the atoms of the element, and around the characteristics of certain of the electrons associated with these atoms. 最基本的定义集中在元素原子间存在的连接形式和与这些原子相关联的电子的某些特性.In a more practical way, however, a metal can be defined as an element which has a particular package of properties.然而，在实际应用中，金属可以定义为具有某些特性集合的某种元素。
Metals are crystalline（晶体的）when in the solid state and, with few exceptions (e.g. mercury), are solid atambient temperatures（常温下）. 除少数金属外如水银，金属在常温下是固态的They are good conductors of heat and electricity and are opaque（nonopaque）to light。
机电专业英语U4 Speaking
Have we enjoy the advantages of CAM.
--Definitely. With CAM, a high degree of precision can be achieved. Besides, productivity and efficiency has been greatly raised.
Is that you Mr. Brown? This is Bob.
Mr. Brown: Oh hello, Bob. Nice to hear you.
Bob:
I’m calling to ask for your help. I have trouble operating the
NC machine tool. Would you please kindly come to help?
Bob
I have a hard time getting through to you.
Did you forget…?
You stood me up.
I waited for you from… to…, but you didn’t show up.
I’d like…
Mr. Brown
I was listening toΒιβλιοθήκη the lecture…Bob
Tell Mr. Brown you have learnt a lot.
Describe briefly to Mr. Brown what CAD / CAM is.
机电一体化专业英语
机电一体化专业英语English Answer:Mechatronics is an interdisciplinary field that combines mechanical, electrical, computer, and software engineering to design, build, and operate systems. It has become increasingly important in modern engineering due to the growing demand for automated and intelligent systems.中文回答：机电一体化是一门综合了机械、电气、计算机和软件工程的交叉学科，用于设计、建造和操作系统。
随着对自动化和智能系统需求的不断增长，它在现代工程中变得越来越重要。
Components of Mechatronics.The core components of mechatronics include:Sensors: Collect data from the physical world.Actuators: Convert electrical signals into physical movement.Controllers: Process sensor data and generate control signals.Software: Designs and implements control algorithms.Applications of Mechatronics.Mechatronics has a wide range of applications, including:Industrial automation: Assembly lines, robotic welding, and automated material handling.Automotive systems: Engine control, brake systems, and advanced driver assistance systems.Aerospace engineering: Flight control systems, navigation systems, and life support systems.Medical engineering: Surgical robots, diagnostic instruments, and prosthetics.Benefits of Mechatronics.Mechatronics offers several benefits over traditional engineering approaches:Increased productivity: Automated systems can work faster and more accurately than humans.Improved quality: Automated systems can produce products with consistent quality.Reduced costs: Automated systems can eliminate the need for manual labor and reduce maintenance costs.Enhanced flexibility: Mechatronic systems can be easily reconfigured to adapt to changing requirements.Challenges in Mechatronics.Despite its advantages, mechatronics also faces some challenges:Complexity: Mechatronic systems can be highly complex, making design and implementation difficult.Cross-disciplinary nature: Mechatronics engineers must have knowledge in multiple engineering disciplines.Integration: Integrating different components from different disciplines can be challenging.Career Prospects in Mechatronics.The demand for mechatronics engineers is expected to continue to grow in the coming years. Mechatronics engineers can work in a variety of industries, including automotive, manufacturing, aerospace, and medical engineering.中文回答：机电一体化的组成部分。
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硕士研究生《机电专业英语》试题
翻译下列文摘：
1、
Abstract: The model calculating the instantaneous cutting force is founded on the instantaneous
cutting area.In addition,the changing process of the instantaneous cutting force is simulated.It is
shown that the axial turning-milling is the process of changed cutting force under the influence
of multi-parameters,the instantaneous cutting force of the single gear is a variation in the whole
cutting process,and the circumferential edge whose cutting force is much greater than the end
edge’s is the main cutting edge.In the whole cutting process,the instantaneous cutting force of
the cutter generates two sudden changes.
2、
Abstract:Introduce the new advances of probabilistic strain fatigue test method,assessment
model and the damage random evolution mechanism. Making a breakthrough of the classical
maximum likelihood test method’s single speciment limit outside the refered experiment loads,
a general maximum likelihood test method is newly presented. The random cyclic stress-strain
responses are found and probabilistic model is established. In addition,a new probabilistic
fatigue strain-life model is also developed. These parameters of probabilistic model should be
estimated by a so-called general maximum likelihood method in which the effect of scattered
regularities of test data and the sample size on the probabilistic model are comprehensivly taken
into account on the level of overall data. Resulting from considerations of the random
stress-strain relation deriving into a “random cyclic strain load” and the random strain-life
relation reflecting the material “ cyclic strain strength”，a cyclic strain load-strength interference
model is presented to perform the reliability of constant amplitude. Combining with Keciguliu’
s recurrence formula，the amplitude can be changed and the reliability anaiysis under condition
of strain load spectrum can be made. All these form a new system which contains the theory and
method of strain fatigue reliability.Furthermore,according to the criterion of effectively short
fatigue crack, It is revealed that the intrinsic cause of random fatigue properties is the difference
2
and the evolutionary of the microstructural conditions in the zone of the dominant effectiveiy
fatigue crack and tip crack.In addition,the three random fatigue relations of random fatigue
crack growth rates,strain-lives,and stress-strain are relative. The fatigue damage is a process
from an initial chaotic state to an independent random state，and then to historically related
random state.
3、
Abstract: The orthogonal metal cutting process is analyzed with nonlinear elastic-plastic finite
element method under the large general finite element programs. Simulation results show that
different tool rake angles have an effect on the cutting shapes,the stress distribution,the strain
distribution,the residual stress and the residuai deformation of the workpiece and that the
relationship between the rake angle and the shearing angle is analyzed. Validate some
experimental results by the way of the simulation, and conclusions can be regarded as the
reference on the engineering application.
4、
5、
3