交流发电机输出的直流电动势会有较大的脉动电压。
The DC electromotive force output by AC generator can have quite big pulsating voltage.
面对此情况，我们必须对直流电动钻机由无功功率大而引起的发电机功率消耗大的现状加以改进。对影响直流电动钻机集电环使用寿命的问题进行了探讨。
Faced with this situation, we need to improve the situation of large consumption caused by a large generator, the problems that impact the life of DC electric drill collecting ring are discussed.
发电机起动器，发电机控制单元，压缩机驱动马达，直流电动机，离心式吹风机，叶片轴向吹风机，重绕机电产品服务。
Starter generators, generator control units, Compressor drive motors, DC electric motors, Centrifugal blowers, Vane axial blowers, Rewinding electromechanical services.
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