In order to ensure the safe operation of pipeline and detect and know the operating condition of the pipeline accurately,the pipeline detection method based on inner-pipe alternating current method is used widely.
为了确保管道的安全运行,及时准确地检测和了解管道的运行状况,一种基于管内交流电流法的管道检测方法被广泛应用。
In addition,the paper is analysis and dicussion of current limiting fuses under the interrupting alternating current and the direct current.
文章总结了限流熔断器通过各种开断操作试验,主要包括一般性操作试验、过载运行条件下的各种老化现象,对开断交流电流和直流电流下,开断失败原因的分析和评价。
Research.of calibration method for AC current;
交流电流校准方法的研究
AC current or voltage source. DC offset can be specified.
交流电流源或电压源。可指定直流偏移。
A device, such as a diode, that converts 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
The rectifier lets current flow into the battery only when A.C. surges in the direction of the arrow.
只有当交流电流沿箭头方向急冲时，整流器才允许电流流入电池组。
an alternating [a direct] current dynamo
交流 [直流] 发电机
DC motor converter set
交流-直流电动变流器组
convert (alternating current)to direct current
将（交流电）变成直流电;
AC clip-on voltammeter
钳形交流电压电流表
AC rectifying type round instrument
交流整流系圆形电表
self-rectifying alternator
自整流式交流发电机
AC rectifying type rectangular instrument
交流整流式方形电表
To convert(alternating current)into direct current.
把…整流将（交流电）转化为直流电
"The AC output must therefore be rectified, or changed to dc."
所以交流电必须整流为直流电。
Conversion of alternating to unidirectional current.
整流交流电转变到单向电流
AC voltage electromagnetic relay
交流电压电磁继电器
converts alternating current into direct current or vice versa.
变交流电为直流电或者变直流电为交流电的装置。
A.C. can be changed into D, C. or vice versa.
交流电能变成直流电，反过来直流电也能变成交流电。
single-speed alternating current electric drive
单速交流电电力驱动
AC moving iron rectangular instrument
交流电磁系矩形电表