永久磁铁衔铁 magnet keeper

科鲁马克斯永久磁铁 Columax permanent magnet

永久性磁铁 permanent magnet

永久磁铁动圈式安培计 permanent magnet moving-coil type ammeter

周期性永久磁铁 PPM ; Periodic Permanent Magnet

永久磁铁动圈式伏特计 permanent magnet moving-coil type voltmeter

永久磁铁联轴器 Permanent Magnet Coupling

水磁铁永磁永久磁铁 permanent magnet

永久磁铁励磁 permanent magnet excitation

非穿永久磁铁 Non-wearing permanent magnet