If the bar magnet is simply held stationary near the coil, no current is indicated.

如果磁棒单纯静止在线圈附近，就检测不到电流。

youdao

Incredibly, The Field Coil Magnet solves this problem.

难以置信的是，励磁磁路解决了这个问题。

youdao

Incredibly, The Field Coil Magnet solves this problem.

难以置信的是，励磁磁路解决了这个问题。

youdao