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electric power
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  电力
     Application of Time-Varying Dynamic Phasor Theory in Analysis of Electric Power System
     时变动态相量理论在电力系统分析中的应用
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     Chaotic Analysis and Prediction for Electric Power Load
     电力负荷混沌特性分析及其预测研究
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     Some Issues on the Active Power Dispatch and Decision-Making under the Environment of the Electric Power Market
     电力市场环境下有功调度与决策机制若干问题的研究
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     Study on Game Model to Price Competition and the Optimal Operation of Reservoir under Electric Power Market
     电力市场竞价策略模型与水库优化调度研究
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     Analysis and Control for Electric Power System Nonlinear Dynamical Behavior
     电力系统非线性动力学行为分析与控制
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  电动助
     Electric Power Steering System based on MC68HC908AB32
     基于MC68HC908AB32的电动助力转向系统
短句来源
     EPS(Electric Power Steering) uses advanced electronics technology and motor control technology in the steering system, the direct power source is not the engine but the DC motor.
     电动助力转向系统(EPS,Electric Power Steering)是将先进的电子技术和电机控制技术应用到汽车转向系统中,不以发动机作为直接动力源,而是用电机控制的助力转向方式。
短句来源
     The controller of electric power steering system was developed based on a 16-bit MCU named MC9S12DP256,made by Motorola corp.
     开发了以美国Motorola公司16位单片机MC9S12DP256为控制核心的电动助力转向系统控制器;
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     A Study on H_∞ Control for Automotive Electric Power Steering System
     汽车电动助力转向系统的H_∞控制研究
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     Study on CAD/CAE Technology of Electric Power Steering System
     汽车电动助力转向器CAD/CAE技术研究
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  电功率
     In view of the energy-saving retrofit on LW4-25 circulating pump of domestic 200 MW unit,the flow passage can be retrofitted with the impeller out of service to increase the operation efficiency by 19.73%~25.19%,improve the flow by 2 198~3 036 m3/h and reduce the electric power by 199.47~107.51kW.
     针对国产200MW机组的LW4-25型循环水泵进行节能改造,利用其报废叶轮进行通流部分改造,使老产品运行效率提高了19.73%~25.19%,流量提高了2198~3036m3/h,电功率下降了199.47~107.51 kW;
短句来源
     The secondharmonic outpllt POwers up to 800 mW and 580 mW with the intensity fluctuations less than ±2. 5% and±2% as well as the long-term frequency stabilities better than±1.9 MHz and±1 MHz have been obtained respectively for the 6-mirror cavity with an input electric power of 1.44 kW and the 4-mirror cavity with an input electric POwer of 1. 2 kW.
     六镜腔与四镜腔分别在输入1.44kw和1.2kW电功率的情况下,获得了800mW与580mw的单频倍频光(λ=0.54μm),功率波动小于±2.5%与±2%,频率稳定性优于±1.9MHz与±1MHz。
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     Titanium dioxide sol is prepared by the sol-gel method with respectively 20kHz, 30kHz, 40kHz (500W electric power) ultrasonic field.
     本文在频率分别为20kHz、30kHz、40kHz(电功率均为500W)的超声场中制备溶胶。
短句来源
     The optimal reaction conditions of ultrasonic for removal of trace level chloroform are found to be at the frequency of 83 kHz, the electric power of 60 W, and an initial concentration of 64×10+{-6} g/L.
     实验中超声波去除管网水中微量氯仿的最优条件为 :频率 83kHz、电功率 60W、初始浓度 64× 10 - 6 g L。
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     Using this model it is calculated that the temperature distributions of annular pipe turbulent transparent air,inside and outside hollow cylinder wall temperature distributions and influence of wall emissivity ε,the ratio of radius to radius ,electric power Q and flow rate G on those.
     利用这一模型计算环道湍流透热空气温度的沿程分布,内、外圆筒壁温分布及壁面辐射率ε、半径比γ、电功率Q和流量G对其的影响。
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  “electric power”译为未确定词的双语例句
     Study on Evaluation & Cultivation of Core Competence of Electric Power Enterprise in China
     中国发电企业核心竞争力评价与培育研究
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     Dynamic Analysis and Study on Column Type Electric Power Steering
     C型电动转向器动力学分析与研究
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     Research on Control Method for Electric Power Steering System Based on Robust Control Theory
     基于鲁棒控制理论的汽车电动转向助力系统控制技术研究
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     Research on the conversion effect of TEA CO_2 laser radiation to electric power
     TEA CO_2激光光电转换效应研究
短句来源
     DISCUSSION OF ELECTRIC POWER CONSUMPTION IN ELECTROWINNING OF ANTIMONY
     关于电积锑电能消耗的初步探讨
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  electric power
The sustainability of polygeneration systems, which work on an appropriate ratio of fuel-to-electric power basis, is higher than that of singular production systems.
      
A small model of market behavior describing the realistic interaction of an electric power plant and an open-pit coal mine was realized in the software form.
      
The quadratic eigenvalue problem in electric power systems
      
Their operation is maintained with electric power supply from solar batteries.
      
A variety of problems can be solved with the help of this space system, namely, transport problems and problems of converting the electric power generated onboard spacecraft into mechanical energy of motion of the space objects.
      
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We are of the opinion that among the various small types of the low water-head power stations or electric power stations, the type with water wheel is most suitable for the present countryside of China. It is better than any type of water turbines, especially when water-head is less than 2 metres.Here we have analysed the head losses in middle-push water wheel, estimated their magnitudes, derived the similarity law of water wheel and pointed out that the kinetic energy flowing out from water wheel can...

We are of the opinion that among the various small types of the low water-head power stations or electric power stations, the type with water wheel is most suitable for the present countryside of China. It is better than any type of water turbines, especially when water-head is less than 2 metres.Here we have analysed the head losses in middle-push water wheel, estimated their magnitudes, derived the similarity law of water wheel and pointed out that the kinetic energy flowing out from water wheel can be recovered by a well-designed open channel.

目前农村低水头小型动力站及水电站可能用的水力机械有贯流式水輪机、立軸式水輪机及水輪三种型式。其中水輪的突出优点是簡单实用,一般人认为水輪的效率低,因此新建的小型电站和动力站都不再采用水輪。我們认为采取必要的改进措施后,它的效率可以大为提高,特别在微水头大流量的条件下,水輸的效率可能大于其他两种水輪机。因此在目前我国农村中,仍有意义。 水輸的流体动力損失主要是漏水,減小水轮与地面的間隙或采用防漏措施,便可大大減小漏水损失;其次是出口动能损失,采用本文所提出的利用渠道收回动能的办法,可減少这类损失;再其次是进口冲击損失,減小水貭点对于水輪的相对速度,便能減小这类损失;最后是水力摩阻损失,采取这些办法后,它的效率就大为提高。中冲式水輪的效率可高于75%,我們认为这个数字是現实的。

In this paper, the method of excitation regulation according to voltage deviation with a high coefficient of amplification is investigated, with an analysis of stability and instability regions, a study of the excellent effect of such regulation in improving the stability of electric power systems, and a discussion of the restrictions on its application imposed by the time constants of the exciter and the regulator.The effects of introducing into the regulating system the first and the second derivatives...

In this paper, the method of excitation regulation according to voltage deviation with a high coefficient of amplification is investigated, with an analysis of stability and instability regions, a study of the excellent effect of such regulation in improving the stability of electric power systems, and a discussion of the restrictions on its application imposed by the time constants of the exciter and the regulator.The effects of introducing into the regulating system the first and the second derivatives of voltage and current as regulating factors in addition to voltage deviation are also analyzed. Finally, several regulation systems are recommended for exciters with Smaller and larger time constants.

本文研究了按电压偏差特大放大系数调节励磁方式的某些规律,分析了它的振荡区和稳定区的特点及其在提高系统稳定性上的优异作用;讨论了励磁机和调节器时间常数对此种调节方式的制约条件。 文中还在按电压偏差特大放大系数调节的基础上,对引入电压一次、二次导数和引入电流一次、二次导数调节的作用与调节品质进行了分析,指出了适合于具有较小和较大励磁机时间常数情况下的几种调节方式。

A constant-current drive system is meant the union(or"combination") of several armatures of motors in a main circuit, with the electric power supplied by a constant-current generator and with the speed of revolution regulated by changing the magnetic field of the motor. In the process of regulation the current of the main circuit keeps constant, it is a new application in ship-building. It resembles the Ware-Leonard system in regulating speed and differs from the latter in the principle of control. Besides,...

A constant-current drive system is meant the union(or"combination") of several armatures of motors in a main circuit, with the electric power supplied by a constant-current generator and with the speed of revolution regulated by changing the magnetic field of the motor. In the process of regulation the current of the main circuit keeps constant, it is a new application in ship-building. It resembles the Ware-Leonard system in regulating speed and differs from the latter in the principle of control. Besides, it has an advantage over the Ward-Leonard system, it may control several motors simultaneously with only one generator. The motor in constant-current circuit will not be in danger of being overloaded and unnecessary to add the overload-avoiding apparatus in the circuit. Therefore, the life of the motor may be prolonged. The natural mechanical characteristic of the constant-current motor is absolutely soft, different characteristics may be obtained by proper feeding-back process. This system has been successfully adopted in the different types of vessels. This paper makes a study of the principle and characteristics of the system, nature of the constant-current motor and its control, and thereby presents its theoretical calculation and method of design.

所謂恒流电力拖动系統,就是把几台电动机的电樞串联在同一个主回路里,由恒电流源供电,用改变电动机磁場的方法来調节吝台电动机的轉速,在調节过程中主回路电流维持恒定或实际上维持恒定。恒流电力拖动系統是船舶电力拖动系統中的后起之秀。它在調逮性能上可以与瓦特-利翁那特(Ward-Leonard)系統比美、而在控制原則上又与之不同;并且还有更优于后者的地方,即可用一台发电机来同时控制几台电动机。恒流回路中的电机不会遭到电流过載的危害,也不必加过电流保护装置,因此电机的使用寿命就可延长。恒流电动机的自然机械特性是絕对的軟特性,通过适当的反馈环节就可以得到各种需要的特性。恒流电力拖动系統已經在工程船舶上得到了成功的应用。本文从电力拖动理論的角度分析了恒流电力拖动系统的原理和特点,恒流电动机的特性及控制方法,并給出了恒流电力拖动系统的理論計算和設計方法。

 
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