查询词典 switching over

The converter can be improved just by exchanging the position of the resonant inductance and the transformer such that the transformer is connected with the lagging leg. The improved converter has several advantages over its counterpart, e.g., the clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. The operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. The effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined.The improved converter is adopted to design the DC/DC converter of secondary power supply in HVDC power system.

本文将谐振电感和变压器交换位置，使变压器与滞后桥臂相连，这样箝位二极管在一个开关周期中只导通一次，同时零状态时谐振电感电流较小，有利于提高变换效率和减小占空比丢失，本文分析改进后变换器的工作原理，并与改进前的变换器进行对比，讨论隔直电容在不同位置对变换器工作的影响，确定一种最佳工程方案。

The inspection unit includes storing unit, logic switching unit and drive change-over switch, inspects whether the storing unit is normal via detecting the edge change, sets the output of abnormal storing unit in certain logic level and performs different logic operations to different logic level setting values.

检验装置包括储存单元、资料切换开关与边缘探测器。其是以边缘变化是否正确来检验储存单元的运作是否正常，并将出现问题的储存单元的输出设定在一固定的逻辑电位上，再对不同逻辑电位设定值使用不同的逻辑运算。

Telecommunications and telephone products division has over 20 years to design, develop, manufacture and sale of telecommunications switching systems and end-product of experience and in China, Hong Kong, Southeast Asia, the Americas and Europe and the rest of the world-renowned reputation.

"通讯及电话产品事业部"拥有二十多年设计、开发、制造及销售交换机系统和电讯终端产品之经验，并在中国、香港、东南亚、美洲及欧洲等世界各地享誉盛名。

Two main problems in designing the main circuit of switching mode excitation controller are peek voltage and over-current of switching device.

开关式励磁调节器主回路设计中需要考虑的两个主要问题是开关器件的尖峰电压和冲击电流。

In addition, equivalent series reactance of excitation transformer worsens the condition of the thyristor operation, and it can bring transient over-voltage at the moment of switching thyristor. The transient over-voltage will endanger the field winding.

励磁变压器的串联电抗恶化了晶闸管的换相工作条件，并在晶闸管元件导通与关断瞬间引起危及到转子励磁绕组安全运行的过电压。

A complete switching cycle consists of four full steps, which moves the forcer the distance of one tooth pitch over the platen.

一个完整的切换周期包括完整的步骤，forcer移动的距离的一颗牙齿音量的滚筒。

Gilliam I had a theory that on the last season we should have been doing shows that were less and less funny so that people were switching off all over the country.

Gilliam：我还曾提出一个理论，说我们应该在最后一集做得越来越没趣，然后全国人民可以关闭电视了。

In addition, the switching power has function of over-voltage and over-current protection.

整个电路具有过压保护、过流保护等功能。

This paper deals with the surge protection of a 220kV H—GIS and analyzes the effects of metal oxide surge attesters on reducing the incoming lightning overvolrages by means of numercal method Meanwhile, there is a kind of over-voltagey which may be rather critical for GIS, e·g·the switching surges with extremely high frequeuly produces by GIS-G switching-off of some loadless duses.

本文讨论220kV混合式GIS变电站过电压保护，用数值计算方法分析氧化锌避雷器对降低过电压的作用，并讨论了有一种类型的过电压可能对GIS要求更为严格，即在主回路中用GIS隔离开关切除空母线引起某些高频操作过电压，因此在绝缘配合时要相应考虑。

Our main products are: microprocessor-based arc, harmonic elimination and PT counters, high-capacity three-phase modular overvoltage protectors, Intelligent Switchgear control devices (SC-8), current mutual inductance Secondary over-voltage protectors, large-capacity high-speed switching device, de-excitation of synchronous generator rotor Switchgear, composite over-voltage protectors, low-voltage modular overvoltage protectors ( SCB-400), high voltage current-limiting fuse combination switch cabinet, computer integrated protection device and other products.

公司主要产品有：微机型消弧、消谐及PT柜、高能容三相组合式过电压保护器、开关柜智能操控装置（SC-8）、电流互感器二次过电压保护器、大容量高速开关装置、同步发电机转子灭磁开关柜、复合式过电压保护器、低压组合式过电压保护器（SCB-400）、高压限流熔断器组合开关柜、微机综合保护装置等产品。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。