查询词典 network

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

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。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。

Specialization as industry of network invite applications for a job serve a trend fall calm, zhang Jianguo of president of network of China person of outstanding ability thinks, in industry of past network invite applications for a job " paste help wanted and release resume " when management mode already became the past, the role of adviser and brain truster is increasingly prominent, no matter be enterprise or to apply for a job person, need specializationed service, the individual needs to find appropriate position to realize his value, and the cost sieve that the enterprise also hopes to carry minimum singles out right talented person.

随着网络招聘行业专业化服务趋势的落定，中华英才网总裁张建国认为，过去网络招聘行业中"张贴招聘广告和发布简历"的经营模式已成过去时，顾问和智囊的角色日益突出，无论是企业还是求职者，都需要专业化的服务，个人需要找到合适的职位实现自己的价值，而企业也希望通过最低的成本筛选出合适的人才。

Many enterprises think Internet is a media only, the enterprise goes out enterprise and product conduct propaganda through Internet, raise a brand famous spend and company image calculates realized sale of network of network sale; to be differentiated to undertake to business administration or customer service branch, sale branch and branch of network sale function are in a kind of concern position that cut apart.

不少企业认为互联网只是一个媒体，企业通过互联网把企业和产品宣传出去，提高品牌知名度和企业形象就算实现了网络营销；网络营销被划分到企业行政或客服部门来进行，营销部门和网络营销职能部门处于一种割裂的关系状态。

The network is brought into into addiction this message of mental category, caused extensive comment and attention instantly, netizen saliva is drawn to fly all over the sky on the net, the diagnostic level that the netizen becomes addiction to the network cannot understand, they state the network becomes addiction is a kind of morbid state admittedly, but by no means " mental disease ", however obstacle of a kind of spirit, with card games addiction, shopping addiction, do not need to be diagnosed clearly, although examine bring up the rear needs treatment, mental hat is too old still.

网络成瘾被纳入精神病范畴的该消息一出，立即引起了广泛的议论与关注，在网上引来网友口水满天飞，有网友对于网络成瘾的诊断标准无法理解，他们表示网络成瘾固然是一种病态，但绝非"精神病"，而是一种精神障碍，和打牌上瘾、购物上瘾一样，不需要明确诊断，即使诊断后需要治疗，精神病的帽子还是太大。

This plan is used in request digital TV network, wireless localized network or other kinds of broadcast network.

该方案用于点播式数字电视网络，无线局域网和其它可以使用广播方式的网络中。

A first packet is broadcast from a first network device to other network devices that participate in the network.

从第一网络设备向参加网络的其它网络设备广播第一分组。

In this way, your wireless network can not broadcast the way through to absorb more users, of course, this does not mean that your network is not available, but it will not appear on the network can use the list.

这样，你的无线网络就不能够通过广播的方式来吸纳更多用户，当然这并不是说你的网络不可用，只是它不会出现在可使用网络的名单中。

VLAN divided after the broadcast domain as a result of the reduced network by broadcasting packets to reduce bandwidth consumption, contribute to the emergence of broadcast storm control, reduce equipment investment, simplifying network management, improve network performance and security.

划分VLAN 后，由于广播域的缩小，网络中广播包所消耗的带宽减少，有助于控制广播风暴的产生、减少设备投资、简化网络管理、提高网络的性能和安全性。

And studied the method of application of network calculus to resource reservation.Based on network calculus,derived the effective bandwidth constrained by end-to-end delay and equivalent capacity for a given buffer size.Analyzed network performances such as maximum delay and queueing buffer length,gave the arrival curve and service curve.

深入研究了网络演算在网络资源预留中的应用方法，推导出了基于端到端时延约束的有效带宽和基于缓冲区长度约束的等效容量计算公式，分析了给定到达曲线和服务曲线条件下网络性能的计算方法。

First, the article analyses the current situation of the Wide Band transmission optical network of Metro and put forward its target of next development. And it continues to talk about the key technology of the Wide Band transmission optical network of Metro: optical caber, MSTP, DWDM, RPR and make comparison with them. It offers the general plan of construction of the Wide Band transmission optical network of Metro.

首先，本文分析了目前宽带城域光传送网的现状，提出了下一代城域光传送网的发展目标，论述了城域光传送网中的主要关键技术：光纤直连、多业务传送平台、城域波分、弹性分组环，并对这几种技术进行了对比分析，提出了宽带城域光传送网总体建设方案。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。