under commutation 欠整流...axis of commutation 整流轴...commutation n.交换,变换,代替整流...commutation relation 对易关系...over commutation 过整流...law of commutation 交换律...commutation pardon 减刑特赦...commutation tables 换算表...natural commutation 自然整流...commutation of punishment 减刑...commutation of penalty 减刑...commutation capacitors 整流电容器...commutation rule 对易规则...commutation switch 转换开关...
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