Alternating sandstones and shales are regarded as important.

Many life processes involve alternating voltages and currents.

许多生命过程涉及到交变电压和交变电流.

So far we have described the propagation of alternating magnetic fields.

至此我们讨论了交变磁场的传播.

The process of alternating solid rock masses is called metamorphism.

固体岩体变换的过程即所谓变质作用.

Alternating current reverses from negative to positive about 60 times a second.

交流电由负到正一秒钟大约变换六十次.

The beating of heart induces alternating currents in the surrounding tissues.

心脏的搏动在其周围组织中感应出交流电流.

The measurement of alternating potential difference may be perturbed by stray current.

交变电位差的测量可能受到游散电流的影响.

Hope it could instruct the chose of the power alternating current squirrel case motor's starting mode.

希望对低压交流电机起动方式的选择能起到指导作用.

This approach was unconventional because most contemporary experimenters employed a single alternating current in their systems.

这个办法并不寻常,因为当时大部份的实验者在他们的系统里,都是采用单一的交流电.

Power Direct Current ( DC ) input and Alternating Current ( AC ) input were designed respectively in this thesis.

本文设计了直流输入和交流线电压输入下的平面 介质阻挡 放电光源的高频高压电源电路.

Alternating current ( A . C ) is a kind of eletric current that continually surges to and fro.

交流电是一种连续不断来回波动的电流.

The internal failures of Alternating Current motor are divided into mechanical failure and electric failure.

交流电动机的内部故障可分为机械故障和电气故障.

This iron can only be used with alternating current.

这种熨斗只能使用交流电.

This paper gives a practical research . Usually , fluorescent lamps are drived by monophase alternating Current.

本文介绍了将荧光灯由常用的单相交流供电改为三相交流供电的燃点方法.

A device, such as a diode, that alternating current to direct current.

整流器;整流管:一种将交流电流转化为直流电流的装置, 如二极管.

This is alternating current.

这就是交流电.

At the moment, data centres perform many conversions between alternating current ( AC ) and direct current ( DC ).

目前, 数据中心在交流电和直流电间要进行多次转化.

A generator shown in the above diagram produces alternating current.

下列简图显示出发电机产生交流电.

This symbol means an alternating current ( AC ) power line.

这个符号表示交流 ( AC ) 电源线.

Besides voltage, resistance and capacitance, an alternating current is also influenced by inductance.

除了电压 、 电阻和电容之外, 交流电还受电感的影响.

We used to weld pipes with direct current ( D . C ) are welder ( alternating current A . C. welder ).

我们总是用直流 ( 交流 ) 电弧焊机焊接管子.