交流电

The resistance of a conductor is not constant for alternating current as it is for direct current.

导体的电阻对于交流电来说并不像它对于直流电那样是恒定的。

This type of MP3 player cannot be connected to alternating current.

这款MP3播放机不可以直接插交流电使用。

An electronic device which converts alternating current to direct current.

一种将交流电转换成直流电的电子设备。

The present form of power systems would be impossible without alternating current.

若没有交流电也就不可能有目前形式的电力系统。

The usual way to do this would be to use a rectifier—a device that converts alternating to direct current.

完成这步常用的方法是使用整流器—一种把交流电转换成直流电的器件。

The flowing of current first in one direction and then in another makes an alternating current.

电流先向一个方向流动，然后又向另一个方向流动构成交流电。

Meanwhile, the part of software has realized the function of the alternating electricity parameter analysis, the directing electricity parameter analysis and the demonstration, which is taking the sampled data in a sampling cycle as the examination object, and carrying on the analysis with the digital signal processing technology to the sampling data, and then programming with single chip.

软件部分则是以一周期内采集的数据为检测对象，用数字信号处理技术对采样的数据进行分析，用单片机进行编程，实现交流电参量和直流电参量分析及显示功能。

The use of this new product cycle alternating current frequency characteristics of the product by the shock force, led directly under the high end of the first metal hardness, it could easily lettering.

本新产品利用交流电频率周期特征，产品受迫震动，带动直杆项端的高硬度金属头，因此可以从容刻字。

An electrical device by which alternating curr t of one voltage is changed to another voltage .

交流电从一种电压转化成另一种电压的电力装置。

The supply to consumers is at 50Hz alternating current while the voltage is 220 volts single-phase and 380 volts three-phase.

所供应的电力是50赫兹交流电，而供电电压则为220伏特单相及380伏特三相。

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。