资料大学自动化专业英语Chapter three.ppt

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自动化专业英语unit 3 A

2. substrate ['sʌbstreit] n. 基质；基片；衬底（等于 substratum）
3. component [kəm'pəunənt] n．成分，元件组件 adj. 组成的，构成的
4. principle ['prinsəpl] n．原理，原则；道义；本义；根源，源泉
5. metallic [mi'tælik, me-] adj. 金属的，含金属的 n. 金属纤维
adv. 锐利地 n. 内行；尖头
Technical Terms
electronic counter 电子计数器 frequency synthesizer 频率合成器
digital instrument 数字仪器
Language points
1．Integrated circuit，or IC is a combination．．．to perform definite function involved in converting information．
Language points
4．Each set contains all the components such as transistors，diodes，and resistors which are interconnected with short fine metallБайду номын сангаасc stripes deposited on the wafer surface．
Language points
2. intend to打算做……，倾向于……，想要…… e.g. 1） I intend to work in the information services (service) industry, or market sectors. 我意向从事信息服务行业，或者市场销售行业。 2）I intend to give up my present post in order to get a more challenging opportunity. 为了获得一个更有挑战性的工作机会，本人打算放弃目前的职位。 3）I intend to become the master of my own body level dream. 我意愿成为精通我自己身体水平梦想的大师。

电气工程及其自动化专业英语(语法部分)

电气工程及其自动化专业英语
Specialized English for Electrical Engineering ＆ Its Automation
戴文进编著
电气工程及其自动化专业教研室
Introduction
• 1 Importance
• 2 Purpose Train students’ comprehension and application ability to
• 另外，专业词汇的词义普遍比较单一，词汇中前缀和后缀出现的频率很高，缩略语使用的比较多。
电气工程及其自动化专业教研室
词汇的分类( lexical classification)
1 技术词汇(special technical words )---某个专业所特有的词汇，如 diode, substation，autotransformer，superconductivity.
Application, implementation
电气工程及其自动化专业教研室
词汇的构成( words constitution)
专业词汇构成的特征(1)有50%以上的专业词汇来自外来语;(2)广泛地使用构词法;(3)常用词汇专业化. 1合成法( composition)
horsepower, push-pull, power utilization 2 转换法(conversion)
• Other characteristic, such as frequency, wave shape, and phase balance are seldom recognized by the consumers, but are given constant attention by electric power utility engineers.

大学英语专业语法课件3-限定词Determ

• Quantifiers: Quantifiers are words or phrases that indicate the quantity or amount of something. Common quantifiers include words such as "many," "few," "several," "a lot of," etc.
Types of determiners: There are different types of determiners, including articles, demonstratives ("this," "that," "these," "those"), quantifiers ("some," "any," "many," "few"), and possessives, each serving a specific function in relation to the noun.
Classification
Qualifiers can be divided into two main categories: adjectives and adverbs. Adjectives modify nouns or pronouns, adding descriptive details such as color, size, shape, age, etc. Adverbs modify verbs, adjectives, or other adverbs, adding details such as time, place, manner, degree, etc.

Unit Three Computer Software 计算机专业英语课件

计算机专业英语
Unit Three Computer Software
Unit Three Computer Software
• 本单元主要介绍计算机相关软件知识，软件主要包含系统软件和应用软件两大类，本单元着重介绍了常用的操作系统如 windows,Linux，及他们之间的比较，并介绍了最新windows7的有关知识。
Unit Three Computer Software
• Passage One System Software • Passage Two Application Software • Passage Three Comparisons of Various Operating
System • Passage Four Windows 7 Operating System:
• Windows：Windows gets its name because of its ability to run multiple applications at the same time, each in its own window. Windows offers graphical user interface (GUI), presents the user with graphic images of computer functions and data. It provides a standard mechanism for copying or moving information from one program to another. This mechanism, called the clipboard, means that information created in one context is instantly reusable in another, you don't need to reenter information or work with clumsy datatransfer utilities. Windows：之所以称为窗口是因为它具有能同时运行多个

自动化专业英语课程PPT课件( 39页)

2.电子表格
1)名称。 2)数据。 3)公式。 (1)自动运算数据下载到表格后，计算机便自动进行运算。 (2)运算模板许多表格生成软件包都提供运算模板，即标准的运算公式。 (3)移动和复制表格生成软件已设计成可以方便地进行表格的增加与减少。 (4)增加和删除要在表格中增加新的行或列，或是删除一部分方格是很容易的。
1.文字处理
(6)开头和结尾像文件的每一页开头都会出现的那种(具有固定格式)页首的文本板块，一旦一次性输入后，便可自动地复制到后续的各页中。 (7)拼法检查许多文字处理软件包得到电子词典及其处理程序的支持，因而可自动地检查拼法上的错误。 (8)通信格式生成经常保持着通信联系的人的名单和地址，可与文件分开存放。 (9)打印格式文件按照操作员选择的格式进行打印。
1.Word
(1) Electronic text capture As text is entered on the keyboard,the program stores the characters in memory and displays,or echoes,them on the video display screen.The cursor,an underline or black character appearing on the screen,indicates the current typing position on the line.If a word contains more characters than can fit within the right margin,the entire word automatically is“wrapped around” in the screen and placed at the beginning of the next line.This word wrap feature allows the user to enter text continuously,uninterrupted by either line feeds or carriage returns. (2)Full-screen (3)Move

自动化专业英语5.ppt

专业英语（5）
自动化专业
第五讲 Transient Analysis by Root-
Locus Methods
准备课文后的单词（5 min）
补充单词
oscillatory a.
damp
v.
asymptote n.
magnitude n.
lope
vi. n.
pole n. zero n. qualitative a. quantitative a. step response
Transient Analysis by RootLocus Methods
读课文 5 min 分析课文
补充介绍：
长句的译法
语法结构复杂修饰成分多内容层次在两个以上带有修饰性短语或附加成分
修饰性短语：介词短语不定式短语分词短语动名词短语形容词短语
附加成分: 插入语同位语独立成分
2. The transfer function is an expression relating the output and input of a linear time-invariant system in terms of the system parameters and is a property of the system itself, independent of the input or driving function.
第
and zeros may be complex, is a complex function and may, therefore, be handled as a
3 vector having a magnitude and an
段 associated angle or argument. Each of the

自动化专业英语第三版

UＮIT 1EleｃｔricaｌNetwｏrｋｓＡ电路An elｅctricａl cｉrcuiｔ or ｎetwoｒk ｉs poｓeｄ oｆｅlemｅnts ｓuch ａs resistｏrs， inducｔoｒs, and ｃapacitors ｃonnecteｄ togetheｒｉn sｏｍｅ maｎneｒ、Ｉｆ th ｅ netｗｏrｋ conｔains nｏｅnｅｒgｙｓｏurｃes，ｓuｃh as baｔterｉeｓ or electrical g ｅnerators， it is kｎｏwn ａｓ a pａssive nｅtwork、Ｏn the otｈer hand， if ｏne or ｍoｒｅ eｎergy souｒｃes are present， the reｓultａnt biｎation is ａn activｅｎｅtwｏrk、Ｉn st ｕdｙing the behavior of an electｒical neｔｗｏｒｋ, we arｅｉｎｔeｒestｅd ｉｎ deｔeｒｍiｎing ｔｈe ｖｏltaｇeｓ aｎｄ cｕrｒｅnts ｔhat exｉｓt ｗithｉn the circuｉt、Ｓince ａ network ｉs posed of passivｅｃｉrcｕit ｅleｍents，ｗe mｕｓt first ｄeｆine ｔhe electｒｉcaｌ chａracteriｓtics of theｓe ｅlｅments、电路或电网络由以某种方式连接得电阻器、电感器与电容器等元件组成。

如果网络不包含能源,如电池或发电机,那么就被称作无源网络。

换句话说,如果存在一个或多个能源，那么组合得结果为有源网络.在研究电网络得特性时，我们感兴趣得就是确定电路中得电压与电流。

因为网络由无源电路元件组成,所以必须首先定义这些元件得电特性、Ｉn the cａsｅ oｆａ resistor, the voltage-currｅnｔｒelａtｉonship ｉs gｉveｎ by Ｏｈm's l ａw， whicｈ states tｈat thｅ voltａge acｒoｓs thｅ reｓｉstor is ｅquａｌｔo the ｃｕrrent thｒoｕgh thｅ rｅsiｓtor multipliｅd by tｈe value oｆ the ｒesiｓtance、Ｍａthematically，ｔhis is expressed aｓ就电阻来说，电压—电流得关系由欧姆定律给出,欧姆定律指出：电阻两端得电压等于电阻上流过得电流乘以电阻值。

四川大学--化工专业英语--课件3

We must lubricate bearings. Bearings must be lubricated．
我们从中可以看出：左栏的句子由于加了主语稍显拖
沓平淡，有的句子喧宾夺主。有的句子加了不必要的人称
主语，所以，无论从语言修辞的角度，还是从传递信息的
角度看，左栏的句子都是不够“科学”的。只有译成右栏
Attention must be paid to the working temperature of the electric machine.
You must pay attention to the working temperature of the electric machine.
比照后一句主动性强，语气生硬，一般在科技问题中不采用。
可以利用主动形式表被动
These products sell like hot cakes. (sell=are sold) 这些产品十分畅销。 The clock winds up at the back. (winds up= can be wound up) 这个钟在反面上发条。 The book is printing. (is printing= is being printed) 这本书正在印刷。
➢ Internal pores or defects within a solid body may originate from, for example, the packing of powder particles, from gas evolution or shrinkage during the solidification of castings.
二、科技英语句法的特点

自动化专业英语翻译P5U3PPT教学课件

[1] A database is a collection of information—preferably
related information and preferably organized. ▪ 数据库是一个相互关联且组织良好的信息的集合。
[2] It is appropriate to discover how different database
July 28, 2007
自动化专业英语教程
教学课件
Email :
2020/12/12http: //
1
P5U3A
Fundamentals of the Database System
第五部分第三单元课文A
数据库基础
A 数据库基础
1. 课文内容简介：主要介绍《数据库基础》中的数据库概念、数据库模型和数据库应用等内容。
理解数据库模型严格的说数据库模型或数据模型是什么？有众多的、精确的解释。笼统地说数据库模型可被用来描述存储在计算机内有组织、有规则的信息集合。这个有规则的数据集合是按照更高效的读取和改变数据的方法用数据建模方案来构建的。取决于所用数据库的应用类型，可以修改数据库结构以有效地改变数据。在过去的50年中，各种数据库建模技术（尤其是在数据检索和数据交换方面）的发展大相径庭，但为了满足提高效率的要求，这些做法都是恰如其分的。在讨论数据库建模和它的演变过程之前，先了解一下应用很有必要。
best served by implementing a denormalized duplication
of an OLTP source database. ▪ 数据仓库的数据库建模方案通过实施一个OLTP源数据库
的非规化的副本来实现。

自动化专业英语(第三版)教学课件lesson2.4-文档资料

• • • • • • The triple point of equilibrium hydrogen The boiling point of oxygen The boiling point of water The freezing point of zinc The freezing point of silver The freezing point of gold -259.34°C -182.962°C 100.0°C 419.58°C 961.93°C 1064.43°C
• The freezing points of certain other metals are also used as secondary fixed points to provide additional reference points during calibration procedures. • 某种其它金属的冰点也可以用作第二个固定点，从而在标 Instruments to measure temperature can be 定过程中提供额外的参考点。 divided into separate classes according to the physical principle on which they operate. The main principles used are:
济南大学控制科学与工程学院
自动化专业英语
பைடு நூலகம்1 1
1. Principles of temperature measurement
• Temperature measurement is very important 然而，它提出一些特殊的问题，因为温度测量没有一个基 in spheres of life and especially so in the 本的温度标准量，无法像其它量的测量一样可以与质量、长度和时间等主要的标准量联系起来。 process industries. • However, it poses particular problems, since 温度测量在生活范围内特别是在过程工业中非常重要。 temperature measurement cannot be related to a fundamental standard of temperature in the same way that the measurement of other quantities can be related to the primary standards of mass, length and time.

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• The alternative enhances insight and is often preferred for more complicated transforms.
3.2 The S-Plane, Pole-Zero Patterns , and Residue Calculation
3.2 The S-Plane, Pole-Zero Patterns , and Residue Calculation
• System characteristics polynomial is the name often used for the denominator polynomial of G(S).
3.1 Introduction
• The correlations between transfer functions and response characteristics are developed in terms of the positions of the system poles and zeros in the s-plane. These are powerful concepts which will also be used in the design of feedback to improve unsatisfactory behavior.
3.1 Introduction
• Inverse transformation of C(s)=G(s)R(sind the response c(t) to an input r(t), for the case where the roots of the denominators of C(s) are real and distinct.
Chapter three
Transfer Performance and The S-Plane
3.1 Introduction
• In this chapter the transient behavior of system described by given transfer function is considered, whether these describe a single block or have been obtained by block diagram reduction.
3.2 The S-Plane, Pole-Zero Patterns , and Residue Calculation
• It is important to note the angles in the splane have great significance, and therefore the scales on both axes must be identical.
• In the input-output relation C(s)=G(s)R(s), each of C,G ,and R is in general a ratio of polynomials in s. Definitions:
• Zeros of C,G and R are the roots of the their numerator polynomials.
• The cases of repeated roots and complex conjugate pairs will now also be considered, and the s-plane will provide the basis for a graphical alternative to the analytical method of calculating the residues.
• Poles of C,G and R are the roots of the their denominator polynomials.
• System zeros and system poles are those of the system transfer function G(s).
• The purpose is to establish correlations and to specify requirements that ensure satisfactory performance. The use of feedback to satisfy such requirements will be considered later.
3.2 The S-Plane, Pole-Zero Patterns , and Residue Calculation
• Since the polynomials have real coefficients, poles and zeros are either real or occur in complex conjugate pairs.
• They are values of s and can be plotted on a complex plane called the s-plane. Because s=+j, the real axis of the plane is the axis, and frequencies are plotted along the imaginary -axis.
• System characteristic equation identifies the result if the system characteristics polynomial is equated to zero. Evidently, its roots are the system poles.