柯林斯词典commutator /ˈkɒmjʊˌteɪtə/ 1. N a device used to reverse the direction of flow of an electric current 电流转向器 返回 commutator剑桥词典a device used in some types of electric motors to change the direction in which an electric current is flowing 转接器（换向器）（电动机中的装置，改变电流方向） 返回 commutator