查询词典 by-product circuit

In 1992, a three phase double circuit line between Goudey and Oakdale station was reconstructed to six-phase line and was operated commercially by New York state electric and gas. It is a milestone from theoretical research to practical application in the development of six-phase transmission.With the decrease of cultivated land and the environmental problem in china, it is an important factor to improve power transmission density in the construction of electric network, and the predominance of six-phase transmission is obvious in this aspect.

六相输电是多相输电的一种，在国外六相输电技术作为提高输电线路功率传输密度，节约线路走廊空间的重要手段得到了充分的重视，对六相输电技术的研究也取得了很大的进展。1992年，美国纽约电力和天然气公司将Goudey到Oakdale之间的一条双回线路改造成了六相输电线，并且已经投入了商业运行，这标志着多相输电技术已经从理论研究向实际应用迈出了重要的一步。

This peper introduces the self-checking short shunt circuit is the current railway system to assuce safe running' Take the Polar frequency autornatic blocking system for example, the feasibility and reliability of this method are analyzed by Numerical simulation.

以铁路信号制式中的极频自动闭塞系统为例，利用数字仿真方法分析这种措施的可行性及可靠性。

At first the current sampling values pass through virtual digital CVTs. And then the voltage and current sampling values are processed by a low pass filter. According to the instantaneous value of transmission line voltage, the current instantaneous values of shunt reactors and P equivalent circuit capacitance can be calculated. After removing these two kinds of current, sampling value differential protection based on all components and fault component can be applied.

由线路电压瞬时值分别实时计算出流入并联电抗器和流入线路Π型等值电路两侧电容的电流瞬时值，再从线路每侧电流除去这两部分电流，用得到的新电流瞬时值作常规采样值差动和故障分量采样值差动保护计算。

This method's characteristics is that shape and gauge close\|circuit control is achieved by means of static load distribution, dynamic load distribution and dynamic setting Automatic Gauge Control,and Bellman dynamic programming is employed in calculation.

该方法的主要特点：系统中采用了静、动态负荷分配，动态设定厚度自动控制系统完成了板形板厚的闭环控制，在算法中采用了贝尔曼动态规划。

Firstly, the relationship between the magnetic pole state of active magnetic pole and the running state of passive magnetic pole was analyzed. The electromagnet's four magnetic pole state and switch sequence, which can drive permanent magnet rotate, were ascertained. Secondly, taking one of magnetic pole state NS (N denotes electromagnet's left magnetic pole and S right magnetic pole) as an example, the distribution of space magnetic field was studied. In addition, the mathematical model of space magnetic field was set up based on the magnetic circuit fundamental and using the method of magnetic analysis and modeling. Lastly, the four states' mathematical model of space magnetic field was solved by using the MATLAB.

首先，分析系统主动磁极磁极状态和从动磁极转动状态之间的关系，确定驱动永磁体转动的电磁体4个磁极状态及切换顺序；其次，基于磁路基本原理，通过磁场分析和建模，以电磁体4个磁极状态之一的NS（N表示其左极、S为右极）为例，对电磁体的空间磁场分布进行研究并建立空间磁场数学模型；最后，以MATLAB为平台对4个磁极状态的空间磁场数学模型进行求解，将求解结果与实验数据进行对比。

Self-heating effect in LDMOS is also investigated by using the special metal contact structure and a fast transient circuit.

接著，我们利用特殊的金属接触电极以及快速的暂态电路来研究LDMOS的自发热效应(self-heating effect)。

After they are disconnect ed, the joint with the self-closed function can prevent the outward seawater ent ering, and prevent the inner hydraulic oil drainning. After they are connected, the fluid circuit is opened by the pressure of the fluid.

这种接头具有自封闭功能，在两油路分离后可以防止外部的海水进入管路，也可以防止管路内的液体流出，连接后，在流体压差的作用下，两液路接通。

In order to increase the occupating coefficient and reliability of digital experimental box,we improve its power supply by designing a simple,reliable overcurrent protecting circuit base on the analysis of its working principle .

设计了一个简单可靠的电源过流保护电路，分析了过流保护电路的工作原理，在此基础上改进了数字电路实验箱中稳压电源电路，提高了仪器的使用效率，增强了可靠性。

By computer driving stepper motor with the help of amplifier circuit and A/D card, the movement of standing wave measuring line and the running of changing attenuator were controlled. Automatically measuring the stae of microwave in rectangular wave-guide was realized.

通过应用计算机驱动步进电机控制驻波测量线的移动和可变衰减器的转动，结合放大电路及模数转换卡，实现了自动测量矩形波导管内微波的工作状态。

By computer driving stepper motor with the help of amplifier circuit and A/D card,the movement of standing wave measuring line and the running of changing attenuator were controlled.Automatically measuring the stae of microwave in rectangular wave-guide was realized.

摘 要：通过应用计算机驱动步进电机控制驻波测量线的移动和可变衰减器的转动，结合放大电路及模数转换卡，实现了自动测量矩形波导管内微波的工作状态。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。