查询词典 fundamental unit

PART 1 UNIT 1 B Electrical and Electronic Engineering Basics A Electrical Networks ———————————— 3 Three-phase Circuits A The Operational Amplifier ——————————— 5 UNIT 2 B Transistors A Logical Variables and Flip-flop —————————— 8 UNIT 3 B Binary Number System A Power Semiconductor Devices —————————— 11 UNIT 4 B Power Electronic Converters A Types of DC Motors —————————————15 UNIT 5 B Closed-loop Control of DC Drivers A AC Machines ———————————————19 UNIT 6 B Induction Motor Drive A Electric Power System ————————————22 UNIT 7 B PART 2 UNIT 1 B Power System Automation Control Theory A The World of Control ————————————27 —————29 The Transfer Function and the Laplace Transformation UNIT 2 B A Stability and the Time Response ————————— 30 Steady State————————————————— 31 A The Root Locus ————————————— 32 ————— 33 UNIT 3 B The Frequency Response Methods: Nyquist Diagrams UNIT 4 A The Frequency Response Methods: Bode Piots ————— 34 B Nonlinear Control System 37 UNIT 5 A Introduction to Modern Control Theory B State Equations 40 38 UNIT 6 A Controllability, Observability, and Stability B Optimum Control Systems UNIT 7 A Conventional and Intelligent Control B Artificial Neural Network Computer Control Technology A Computer Structure and Function 42 B Fundamentals of Computer and Networks 43 44 PART 3 UNIT 1 UNIT 2 A Interfaces to External Signals and Devices B The Applications of Computers 46 UNIT 3 A PLC Overview B PACs for Industrial Control, the Future of Control UNIT 4 A Fundamentals of Single-chip Microcomputer 49 B Understanding DSP and Its Uses 1 UNIT 5 A A First Look at Embedded Systems B Embedded Systems Design Process Control A A Process Control System B 50 PART 4 UNIT 1 Fundamentals of Process Control 52 53 UNIT 2 A Sensors and Transmitters B Final Control Elements and Controllers UNIT 3 A P Controllers and PI Controllers B PID Controllers and Other Controllers UNIT 4 A Indicating Instruments B Control Panels Control Based on Network and Information A Automation Networking Application Areas B Evolution of Control System Architecture PART 5 UNIT 1 UNIT 2 A Fundamental Issues in Networked Control Systems B Stability of NCSs with Network-induced Delay UNIT 3 A Fundamentals of the Database System B Virtual Manufacturing—A Growing Trend in Automation UNIT 4 A Concepts of Computer Integrated Manufacturing B Enterprise Resources Planning and Beyond Synthetic Applications of Automatic Technology A Recent Advances and Future Trends in Electrical Machine Drivers B System Evolution in Intelligent Buildings PART 6 UNIT 1 UNIT 2 A Industrial Robot B A General Introduction to Pattern Recognition UNIT 3 A Renewable Energy B Electric Vehicles UNIT 1 A

电路 2 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。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，那么组合的结果为有源网络。在研究电网络的特性时，我们感兴趣的是确定电路中的电压和电流。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的电特性。就电阻来说，电压-电流的关系由欧姆定律给出，欧姆定律指出：电阻两端的电压等于电阻上流过的电流乘以电阻值。在数学上表达为： u=iR (1-1A-1)式中 u=电压，伏特；i =电流，安培；R =电阻，欧姆。纯电感电压由法拉第定律定义，法拉第定律指出：电感两端的电压正比于流过电感的电流随时间的变化率。因此可得到：U=Ldi/dt 式中 di/dt =电流变化率，安培/秒； L =感应系数，享利。电容两端建立的电压正比于电容两极板上积累的电荷 q 。因为电荷的积累可表示为电荷增量 dq 的和或积分，因此得到的等式为 u=，式中电容量 C 是与电压和电荷相关的比例常数。由定义可知，电流等于电荷随时间的变化率，可表示为 i = dq/dt。因此电荷增量 dq 等于电流乘以相应的时间增量，或 dq = i dt，那么等式(1-1A-3)可写为式中 C =电容量，法拉。

Amino acids are organic acids including amino and the fundamental unit of composing the protein.

氨基酸是含有氨基的有机酸，是构成蛋白质的基本单位。

Community is the fundamental unit of the supply and consumption of public goods and the primary domain of urban public life as well.

社区是公共物品供给与消费的基本单元。

What are we doing when the development of our society makes the family, the fundamental unit of society, so fragile?

我们社会的发展，把家庭这个社会基本单位搞得那么脆弱干什么呢？

A more complicated particle called the chromosome is apparently the fundamental unit of assembly.

一个更复杂的微粒，称为染色质体，显然是包装的基本单位。

The rural settlement system is the fundamental unit of the rural inhabitable environment, It is a kind of rural life system, which has definite territory boundary and spatial concepts , also it is a rural human-environment territory system .

乡村住区系统是乡村人居环境的基本功能单元，是具有一定地域边界和空间内涵的乡村生活系统，也是一种乡村人地关系地域系统。

In the previous section, we considered the fundamental unit of Leibniz's metaphysics, the monad.

在上一章，我们思考过莱布尼茨形而上学的本质是单子。

Every independent family is a fundamental unit of land possession and management,therefore,explaining farmer's bread-and-butter is a redoubtable visual angle to understand country ownership of land.

一个个有着独立生计的家户是土地占有和经营的基本单位，故农家生计的解释对理解乡村地权是一个不容忽视的视角。

In eukaryotic cells, the fundamental unit of chromatin is nucleosome, which is composed of a histone octamer with two copies of H2A, H2B, H3 and H4 and 146 base pairs of DNA.

真核细胞中，核小体是染色质的基本单位，它由两个拷贝H2A、H2B、H3和H4所组成的核心组蛋白八聚体，及缠绕于其上的146bp DNA构成。

Both philosophers and philosophically minded scientists have variously attempted to reduce the proliferation of gene concepts, either 'vertically' to a fundamental unit, or 'horizontally' by subsuming them under a general term.

哲学家和具有哲学思想的科学家都试图减少对基因概念的扩展，不管是从纵向划分成一个基本单元还是横向归结为一个普通术语。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。