永磁动圈式仪表 permanent magnet moving coil instrument ; coil instrument ; permanent-magnet-coil instrument ; permanent magnet moving coil meter

永磁动圈式扬声器 permanent magnet dynamic loudspeaker ; permanent dynamic loudspeaker

永磁动圈式仪器 permanent-magnet moving-coil instrument

永磁动圈式检流计 [仪] permanent-magnet moving-coil galvanometer ; magnet moving coil galvanometer

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