查询词典 energy unit

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。

According to the necessity for researching the input-output model of enterprise complex energy-consuming unit, the modeling method for energy-consuming unit based on improved Resource Allocating Network was researched.

针对企业复杂能耗单元输入输出模型研究的要求，研究了基于改进资源分配网络的能耗单元输入输出模型辨识方法。

Through the theoretical calculation and the comparison of the compound crown wheel energy saving pumping unit with the conventional one, it can be found that the new pumping unit has obvious energy-saving effect.

通过理论计算和对复合天轮式节能抽油机与常规机性能对比可以看出，本机具有显著的节电效果。

A new energy-saving hydraulic pumping unit was designed, which had compound Cylinder-accumulator system, it can use the gravitational potential energy of the pumping unit.

研究出一种节能型液压抽油机，该液压抽油机采用复合缸--蓄能器液压系统，可以回收利用下行程时抽油杆释放出来的重力势能，具有显著的节能效果。

The energy-saving tug unit of the pump unit,its wattless loss is the least,it has the largest energy-saving rate,it has the best applying result,compared with the former ordinary motor its energy-saving rate reaches 36.8%.

而抽油机节能拖动装置其无功损耗最小，节电率最大，产液量单耗降低率最高，应用效果最佳，与原普通电机对比其节电率可达36.8%。

In this paper, taking one 1900t/h supercritical pressure once—through boiler installed in East boiler company as subject investigated, analyzing the structure and characteristic of unit, from the mechanism of units, based on the law of quality conservation, energy conservation and momentum conservation, having Lagrange fluid particle tracing idea in hydrodynamics field application in analyzing of unit operational characteristic, author build up the nonlinear distributed parameter general dynamic mathematical model of single-phase heating surface or diphase heating surface in the steam-water system for supercritical pressure once—through boiler, which is suitable numerical calculation and simulation for large scale disturbance and full working conditions change, and enough materializing distributed characteristic of thermodynamic parameter in process and time lag characteristic of energy transportation in tache. The transient responses curve of the system main variables under several disturbance are computed by Computer Simulation for the model, and theoretical analysis shows that the simulation results are reasonable.

本文以东方锅炉集团公司的一台1900 t /h超临界压力直流锅炉为研究对象，在分析机组结构和特性的基础上，从机组的工作机理出发，以质量、能量、动量守恒定律为依据，将流体力学领域中的Lagrange流体质点追踪思想用于机组运行特性的分析上，建立了适用于超临界压力直流锅炉汽水系统单相、双相受热面的非线性分布参数通用动态数学模型，该模型适合于大扰动全工况变化的数值仿真计算，充分体现了过程热力参数的分布特性和环节中能量输送过程的时滞特性，并对模型通过计算机仿真得出各种扰动下系统主要变量的响应曲线，从理论上分析了仿真结果的合理性。

It is an important route to increase efficiency and reduce pollutants on coal using for resident that clean coal technologies suitable for resident is to be chosen and used. In this paper, a quantitative assessing method on clean coal technologies us is used to assess and screen clean coal technologies suitable for resident . Integrated cost for unit energy production on various clean coal technologies suitable for resident is coal cleaning 48.37 yuan/GJ,coal molding for resident 45.37 yuan /GJ,coking 28.53 yuan/GJ,coal pressurized gasification combined with methanol 54.73 yuan /GJ,coal pressurized gasification combined with oil and 50.71 yuan/GJ,coal two-segment stove gasification 88.66 yuan/GJ,erection stove gasification 38.84 yuan /GJ. Integrated cost for unit energy production on coking is the least.

选用合适的民用清洁煤技术是提高居民生活用煤能源利用效率、减少环境污染的重要途径之一，本文利用笔者提出的清洁煤技术定量评价方法对民用清洁煤技术进行了定量评价与筛选，评价结果表明，在标准状态下各种民用适用清洁煤技术的单位综合成本分别为选煤48元/GJ，民用型煤45.73元/GJ，炼焦制气28.53元/GJ，加压气化联产甲醇54.73元/GJ，加压气化联产油蜡50.71元/GJ，两段炉气化88.66元/GJ，直立炉气化38.84元/GJ，其中炼焦制气是单位综合成本最小的民用清洁煤技术。

Forage unit Unit of measurement of the energy input of feedstuffs based on the net energy value of 1kg of barley.

饲料单位根据1公斤大麦的净能量值衡量饲料能量投入的单位。

Forage unit: Unit of measurement of the energy input of feedstuffs based on the net energy value of 1kg of barley.

饲料单位：根据1公斤大麦的净能量值衡量饲料能量投入的单位。

Two is economy increase style change's unpleasant, protrude earth's surface now: Overage depend on material's output de increase, trade develop urgently awaits break through what extension increase's momentum; with developed country same profession compare with, modern manufacture service industries development's unpleasant, become our soft rib and short leg; unit's prolific energy consumption and steel products consumption's descend slowly, especially will is behind unit's prolific energy consumption's steel consume descend obviously hasten slow down in 2000; capital asset invest increase fast, producing energy expand violent.

二是经济增长方式转变不快，突出地表现在：过度依赖实物产量的增长，行业发展亟待突破外延增长的惯性；与发达国家的同行相比，现代制造服务业发展不快，成为我们的软肋和短腿；单位产出的能耗和钢材消耗下降缓慢，尤其是2000年后单位产出的能耗钢耗下降明显趋缓；固定资产投资增长过快，产能扩张过猛。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了