交流换向器式电动机
AC commutator motor
alternating-current commutator machine
交流无换向器无刷电动机
AC commutatorless and brushless motor
交流换向器电机
alternating current commutator machine
AC commutator machine
补偿式换向器电动机
compensated commutator motor
单相并激换向器电动机
single-phase shunt commutator motor
单相串激换向器电动机
single-phase series commutator motor
多相换向器电动机
polyphase commutator motor
双馈多相并励换向器电动机
doubly-fed polyphase shunt commutator motor
无换向器电动机
permanent-magnet brushless motor
Economy analysis
发电机交流电压测定
generator ac voltage metering