compound DC machine 复励直流电机
ideal DC machine 理想直流电机
super conducting homopolar DC machine 超导同极直流电机
shunt DC machine 并励直流电机
brushless DC machine 永磁无刷直流电机
series DC machine 串励直流电机
separately excited DC machine 他励直流电机
DC arc welding machine 直流弧焊机
AC-dc welding machine 交直流两用焊机
In the separately excited dc machine, the field winding is excited from a separate source.
对于它励直流电动机，励磁线圈由一个单独的电源来励磁。
A rotating commutator on the dc machine, used as an exciter, was a common means for achieving rectification in the past.
在过去，直流励磁机上的旋转整流子是用作整流的普遍措施。
Maintenance practices for the commutator of the DC machine in the steel mill are introduced in this paper.
本文着重介绍了冶金企业轧钢车间大型直流电机换向器的现场维护工作和体会。
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