高分辨率永久磁铁
high resolution permanent magnet
钴合金永久磁铁
cobalt alloy permanent magnet
稀土永久磁铁
rare-earth magnets
Rare-earth Permanent Magnet
永久磁铁动圈式安培计
permanent magnet moving-coil type ammeter
永久磁铁动圈式伏特计
permanent magnet moving-coil type voltmeter
永久磁铁励磁
permanent-magnet excitation
永久磁铁驱动的制动器
permanent-magnet-actuated brake