Rotating magnetic field is not caused by mechanical methods, but in AC pass in a few of the electromagnet, the nature of its magnetic cycle of change can be seen as rotating magnetic field.

转动磁场并不是用机械方法造成的，而是以交流电通于数对电磁铁中，使其磁极性质循环改变，可看作为转动磁场。

youdao

Rotating magnetic field is not caused by mechanical methods, but in AC pass in a few of the electromagnet, the nature of its magnetic cycle of change can be seen as rotating magnetic field.

转动磁场并不是用机械方法造成的，而是以交流电通于数对电磁铁中，使其磁极性质循环改变，可看作为转动磁场。

youdao