《专业英语》课件(2)-The_Operational_Amplifier
专业英语ppt.ppt
(1) Accuracy :the data must be accurate
(2) timeliness :Samples must be tested as soon
as possible without delay
(3) Continuity
supervision and testing centers, testing centers for quality control of chemical fertilizers, pesticides Supervision and Testing Center, veterinary testing centers, feed quality and safety of agricultural products
health
• related to production development, consumption
safety, economic development
• one of the basic functions of government
2.The Relationship between Safety and Test ﹡quality of agricultural products depends on the
❖ quality and safety testing, for the present, can not leave without a large number of inspection agencies
❖ inspection agencies includes:seed quality
专业英语课件(会计专业)
A financial statement that shows the inflow and outflow of cash and cash equivalents over a period of time
The process of calculating and interpreting financial ratios to assess a company's performance, financial position, and liquidity
Understand and apply international accounting standards: Learners should gain a through understanding of international accounting standards and be able to apply them in practice
Enhance critical thinking and problem solving skills: Through the study of accounting professional English, learners should develop critical thinking and problem solving skills that are essential for success in the accounting field
The Learning Objectives of Accounting
Professional English
01
02
03
Develop language skills for effective communication: Learners should be able to communicate confidently and effectively in English, both orally and in writing, in accounting related contexts
专业英语汇报ppt课件
；.
5
• central sulcus • lateral sulcus • parietooccipital sulcus
Three sulci
；.
6
the brain and the mind
• The brain is the Most Powerful Computer in the Universe • Man still has a lot to learn about the most powerful and complex part of his body -
- the brain.
；.
2
The division of tain Interbrain midbrain cerebral bridge medulla cerebellum
brain stem
；.
3
the brain
• The average adult brain weight in China is 1375 grams for men and 1305 grams for women. Although there are obvious individual differences in human brain weight, we can not measure the merits and demerits of human race. Compared with the weight and structure of the animal brain, the development of the human brain is mainly characterized by the increase in the area of the cerebral cortex and the highly differentiated and closely constructed cells in the various layers of the cortex.
专业英语讲课ppt
Farad abbreviated parallel magnitude Voltage fabricate conjunction maintain peri vt. n. vt. adj. v.
法拉（电容单位） 缩写，简化，简写成，缩写成 平行的，并联的 大小，数量，巨大，广大，量级 电压，伏特数 制作，构成 联合，关联 维持，继续 外围的 n.外围设备 矫正，调整
Capacitors can be fabricated onto integrated circuit(IC) chips. They are commonly used in conjunction with transistors in Dynamic Random Access Memory（DRAM）.
utility electrical energy electric field Integrated Circuit(IC) Dynamic Random Access Memory(DRAM) Alternating Current(AC) Direct Current(DC)
n.效用，有用 电能 电场 集成电路 动态随机存取存储器 交流 直流
The capacitors help maintain the contents of memory.
Large capacitors are used in the power supplies of electronic equipment of all types, including computers and their peripherals. In these systems, the capacitors smooth out the rectified utility AC, providing pure, battery-like DC.
大学电气专业-专业英语课件-6
①A typical DC generator or motor usually consists of an armature core, an air gap, poles, and a yoke which form the magnetic circuit; an armature winding, a field winding, brushes and a commutator which form the electric circuit; and a frame, end bells, bearings, brush supports and a shaft which provide the mechanical support.
二极管是一种基本的电子元件。它限制电流在一个方向上 流动的能力是实际上每个电子电路生产中所依赖的关键性 质，从最小的电源到最大的工业过程控制器。
自动化专业英语全文翻译
《自动化专业英语教程》-王宏文主编-全文翻译PART 1Electrical and Electronic Engineering BasicsUNIT 1A Electrical Networks ————————————3B Three-phase CircuitsUNIT 2A The Operational Amplifier ———————————5B TransistorsUNIT 3A Logical Variables and Flip-flop ——————————8B Binary Number SystemUNIT 4A Power Semiconductor Devices ——————————11B Power Electronic ConvertersUNIT 5A Types of DC Motors —————————————15B Closed-loop Control of DC DriversUNIT 6A AC Machines ———————————————19B Induction Motor DriveUNIT 7A Electric Power System ————————————22B Power System AutomationPART 2Control TheoryUNIT 1A The World of Control ————————————27B The Transfer Function and the Laplace Transformation —————29 UNIT 2A Stability and the Time Response —————————30B Steady State—————————————————31 UNIT 3A The Root Locus —————————————32B The Frequency Response Methods: Nyquist Diagrams —————33 UNIT 4A The Frequency Response Methods: Bode Piots —————34B Nonlinear Control System 37UNIT 5 A Introduction to Modern Control Theory 38B State Equations 40UNIT 6 A Controllability, Observability, and StabilityB Optimum Control SystemsUNIT 7 A Conventional and Intelligent ControlB Artificial Neural NetworkPART 3 Computer Control TechnologyUNIT 1 A Computer Structure and Function 42B Fundamentals of Computer and Networks 43UNIT 2 A Interfaces to External Signals and Devices 44B The Applications of Computers 46UNIT 3 A PLC OverviewB PACs for Industrial Control, the Future of ControlUNIT 4 A Fundamentals of Single-chip Microcomputer 49B Understanding DSP and Its UsesUNIT 5 A A First Look at Embedded SystemsB Embedded Systems DesignPART 4 Process ControlUNIT 1 A A Process Control System 50B Fundamentals of Process Control 52UNIT 2 A Sensors and Transmitters 53B Final Control Elements and ControllersUNIT 3 A P Controllers and PI ControllersB PID Controllers and Other ControllersUNIT 4 A Indicating InstrumentsB Control PanelsPART 5 Control Based on Network and InformationUNIT 1 A Automation Networking Application AreasB Evolution of Control System ArchitectureUNIT 2 A Fundamental Issues in Networked Control SystemsB Stability of NCSs with Network-induced DelayUNIT 3 A Fundamentals of the Database SystemB Virtual Manufacturing—A Growing Trend in AutomationUNIT 4 A Concepts of Computer Integrated ManufacturingB Enterprise Resources Planning and BeyondPART 6 Synthetic Applications of Automatic TechnologyUNIT 1 A Recent Advances and Future Trends in Electrical Machine DriversB System Evolution in Intelligent BuildingsUNIT 2 A Industrial RobotB A General Introduction to Pattern RecognitionUNIT 3 A Renewable EnergyB Electric VehiclesUNIT 1A 电路电路或电网络由以某种方式连接的电阻器、电感器和电容器等元件组成。
专业英语王立琦版课文翻译
ResistorA resistor is a two-terminal electronic component that opposes an electric current by producing a voltage drop between its terminals in proportion to the current, that is ,in accordance with Ohm’s law :V=IR .The electrical resistance R is equal to the voltage drop V across the resistor divided by the current I through the resistor. Resistors are used as part of electrical networks and electronic circuits.译：电阻器是一个二端口电子元件,电阻是阻止电流流动，通过按比例产生其端子之间的电压降的电流,也就是说,根据欧姆定律:V = IR。
电阻R等于电压降V除以通过电阻的电流I。
电阻作为电子网络和电子电路的一部分。
TransistorIn electronics, a transistor is a semiconductor device commonly used to amplify or switch electronic signals . A transistor is made of a solid piece of a semiconductor material , with at least three terminals for connection to anext ernal circuit. A voltage or current applied to one pair of the transistor’s terminals changes the current flowing through another pair of terminals. Because the controlled current can be much larger than the controlling current, the transistor provides amplification of a signal. The transistor is the fundamental building block of modern electronic devices, and is used in radio, telephone, computer and other electronic systems. Some transistors are packaged individually but most are found in integrated circuits.译：在电子技术中，晶体管是一种，常用来放大或进行开关控制电子信号的半导体器。
新航标职业英语2课件
提供各种职场写作模板和范文，以帮助学生更快地掌握写作技巧。
写作训练资源
CHAPTER
03
course arrangement
教师会定期跟踪学生的学习进度，了解学生的学习状况，并根据实际情况调整教学计划。
学习进度跟踪
教师会定期向学生反馈学习进度，让学生了解自己的学习状况，并根据反馈调整学习计划。
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New Navigation Aids Vocational English 2 Coursewar
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目录
Course IntroductionTeaching contentcourse arrangementCourse featuresTeacher teamStudent feedback
要点一
要点二
Active learning approach
The course will encourage students to actively participate in class activities, such as role-plays, group discussions, and problem-solving exercises, to enhance their English communication skills and critical thinking abilities.
口语练习目标
提供真实商务场景的模拟训练，如商务会议模拟、产品发布会模拟等。
口语练习资源
选取职场相关的文章，包括商务信函、合同条款、行业报告等，以提高学生的阅读理解能力。
阅读训练内容
阅读训练方法
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P1U2A
The Operational Amplifier
难句解释：
[1] One problem with electronic devices corresponding to the generalized amplifiers is that the gains, AU or AI, depend upon internal properties of the two-port system. 对于像一般放大器这样的电子设备，一个问题是 其增益AU 或者AI取决于两端口系统的内部特性。 That 作从属连接词，在句中没有实在意义，只起 连接从句的作用，引导主语从句、宾语从句、同位语 从句或表语从句。
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P1U2A
The Operational Amplifier
背景知识：运算放大器是一种常用的电子器件。具
有输入阻抗高、输出阻抗低、放大倍数大、性能稳 定的特点。在利用运算放大器设计电路时，由于其 放大倍数很大，电路的特性主要是由外部输入输出 网络的特性决定，与放大器本身的特性关系不大，
因此可以方便地构成各种电子线路。
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专业英语的词汇特点
二、缩略词多
缩略词或缩写词经常大量出现在科技文章中，掌
握一些常见的缩略词对阅读外文资料是十分必要的。
除去一些常用的缩略词外，有时某一篇论文的作者 还会将仅在该文中使用的术语转换为缩略词。
AC(alternate current)交流电路
IC(integrated circuit)集成电路
例如：conduct 传导 conductor
bandwidth
semiconductor
带宽
2. 派生词，一般组成为：前缀+词根+后缀=新词
v.
～or导体 n. semi（半）～半导体 n.
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专业英语的词汇特点
多记词根和前后缀并注意积累，就会收到举一反 三，甚至以一当十的效果，从而有效地扩充词汇量。 例如： electro（电，电的）electronic 电子的 electromechanical 机电的 electrical 电气的 electrician 电气技师
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(2) with + 抽象n.=adv. with care =carefully with accuracy=accurately
with precision=precisely
with ease = easefully with efficiency = efficiently with skill = skillfully with difficulty=difficultly
micro （微小的）microcomputor 微机 microprocessor 微处理器 microdetector 灵敏电流计
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科技英语语法——词类
二、介词
1. 介词短语在句中的主要语法功能
(1) 作状语（句中位置灵活）
e.g1: In nature there are many substances.
1
专业英语的词汇特点
对于阅读，词汇量是一个非常关键的因素，是提高 阅读速度的首要条件。 一、词汇的专业性含义强 科技文章中涉及到大量的专业术语，这些词汇有的 仅是某专业的专用词，不具有其他含义，如：capacitor 电容，Internet 因特网；有些则除了具有本专业含义外， 还在日常生活中和其他专业中具有不同的含义，如： memory 内存/记忆，bus 总线/公共汽车，后一类词在 翻译或阅读中往往会引起误解，需要通过积累并根据其 语言环境和专业知识判断其含义。
(5) 作插入语
如：in fact; of course; for example… e.g: For example, we can make an electric bell with this kind of magnet. 例如，我们可以用这种磁铁来制作电铃。
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2. 介词的一些特殊用法 (1) of + 抽象n.=adj. of interest=interesting of use =useful of value =valuable of importance=important of help =helpful of significance=significant e.g1: Laboratory work is considered of great importance to students of engineering. 实验对工科学生来说及其重要。
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(4) 作补足语
e.g1: This parameter is defined as the ratio of signal to noise. 这个参数定义为信噪比。（主语补足语） e.g2: We refer to this electronic device as a robot. 我们称这种电子设备为机器人。（宾语补足语）
1/2
one/a half (one second 错误)
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零点几的表示法：转化为分数表示 E.g: 0.3 → 3/10 three tenths 若是数值带有单位，在分数表示后+―of a(an) +单位 名称”
E.g: 0.3g 2. 特殊表示法 倍数
分数 百分数
three tenths of a gram the +n.+后置定语
e.g: This experiment should be done with care.
这个实验应该仔细地做。
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三、数词 1. 分数的表示法 分子（用基数词表示）：one, two, three, … , ten
分母（用序数词表示）：first, second, third, …
注：当分子=1时，分母用单数形式； 当分子>1时，分母用复数形式。 e.g: 1/3 2/5 one third two fifths
=This wire is four times as long as that one.
(2) by a factor of ―n‖ 与表示“增加”、“减少”等词 连用时应译为“n-1‖倍。
E.g: In this case, its gain will be increased by a factor of 5. 在这种情况下，其增益将提高4倍。
5. What are the important laws of operational
amplifier?
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P1U2A
The Operational Amplifier
生词与短语：
operational amplifier 运算放大器
electronic device 电子器件
depend upon internal property 依赖于，取决于 内部特性
+ that +后置定语 what – 从句
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E.g1: The voltage is 100 times the signal applied to the amplifier.
这个电压是加给放大器信号的100倍。（相当于在 倍数词后省略了as large as）
E.g2: The force provided by two parallel rubber bands is twice that provided by one rubber band. 两根平行的橡皮筋所提供的力为一根橡皮筋的两倍。
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P1U2A
The Operational Amplifier
阅读文章回答问题： 1. What problem is usually concerned with electrical
devices as amplifiers?
2. What are the advantages oHow many characteristics are of operational amplifier? And what are they? 4. What is one of the key features of Op-Amp design?
parameter n. 参数
vary v. 不同于
component n.
inner working
元件，成分
内部工作原理
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transistor n. 晶体管
beyond the scope of… 超出…的范围 a variety of 多种的，各种的 filter circuit 滤波电路 with respect to 相对于 differential device 差分装置 KVL Kirchhoff Voltage Law 基尔霍夫电压定律 gain factor 增益因子 denominator n. 分母 fraction n. 分数 numerator n. 分子 independent of 与…无关
回顾与复习——Electrical Networks 单词及短语中英文对译： 电网络 无源网络 有源网络 回路电流 电压降 等效电路 微分方程 回路分析法 rate of change of current voltage/current source in series algebraic sum amplifying device current flow differentiation with respect to time second-order
E.g3：At this point, the current in the branch is ten times what it was.
这时，该支路中的电流为原来的10倍。
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3.两个典型句型
(1) ―n‖ times +比较级+than …=―n‖ times as +原级 +as …