短语词组短语commutate ammeter 多挡安培计Commutate output 整流输出DPC commutate DPC 整流Elaeagnus commutate 银莓commutate e 整流换向hv commutate 高压整流commutate detail 变为直流电commutate circuit 整流电路commutate commute 整流 返回 commutate