polarizing winding造句

A single-phase polarizing winding is connected to the " running " system.
For AC circuits, the principle is extended with a polarizing winding connected to a reference voltage source.
If the frequency of the source connected to the polarizing winding is different from the source connected to the field winding, the pointer rotates continually at a speed proportional to the difference in system frequencies ( the beat frequency ).
It's difficult to find polarizing winding in a sentence. 用polarizing winding造句挺难的