Traction motors and main generators for locomotives high speed excites for turbo-generators, rolling mill motors, and main generators, a. C, commutator motors and other d. C. Motors with some difficulties of communtation是什么意思_Traction motors and main generators for locomotives high speed excites for turbo-generators, rolling mill motors, and main generators, a. C, commutator motors and other d. C. Motors with some difficulties of communtation在线翻译_英语_读音_用法_例句