串联电阻法与双线圈换接法是两种提高直流电磁开关返回系数的常用方法。

In this paper two methods to elevate the return factor of the d.

youdao

串联电阻法与双线圈换接法是两种提高直流电磁开关返回系数的常用方法。

In this paper two methods to elevate the return factor of the d.

youdao