A permanent magnet and a moving contact are fixed on a swing plate which can deflect, and the top end of the swing plate is hung on a coil brace through a spring.
永久磁铁和动触头固定在摆动板上，摆动板可偏转，顶端通过弹簧吊置在线圈支架上。
2
For example, polishing a glass plate with a silk scarf electrifies the scarf so that it ACTS like a magnet.
例如，用一条丝巾擦一块玻璃盘子就会使丝巾带电，它可以起到磁铁的作用。
3
On the basis of electro-magnet relationships, a mathematical model of permanent magnet linear synchronous motor (PMLSM) with a conductive plate on its secondary was built.