摘要
本文讨论了两磁耦合线圈互感系数Ｍ的两种不同定义，两种定义使用上的不同及其优缺点。
This paper talks about two different definitions of mutual-inductance cou-pling coil(M) as well as the merite and demerite of the definitions in application.
关键词
互感电路
互感系数
电压方程
mutual inductance circuit,mutual inductance factor, voltage equation
