大电机制造业
large electric machine industry
电机制造
manufacture of motors
motor manufacturing
manufacture of electrical machines
交流电机电枢线组
alternator armature winding
牵引电机电枢参数检测
armature of drawing motors
同步发电机电枢绕组
alternator armature winding
YBF系列风机电机
series YBF Ex motor for fan