moving-iron type hot stylus recorder 热笔描绘动铁式记录器
moving iron type voltmeter 动铁式伏特计
moving iron type ammeter 动铁式安培计
moving iron type loudspeaker 动铁式扬声器
moving-iron type instrument 动铁式仪表
moving-iron type 动铁片型
moving iron type instrument 动铁式仪表
moving iron type loud eaker 动铁式扬声器
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