movable head
可动头磁盘 movable head disc
可动式磁头 movable head
驱动电动三可变镜头 DC
可选配浮动刀头 Movable working head
磁头可移动式磁盘 Movable Head Disk
头尾可动 head and tail movable
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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。
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.
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