drive head ; head motion
... drive chain 传动链 drive head 传动机头 drive rod 传动钻杆 ...
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机头传动滚筒 head drive pulley
采用气压传动,水平直线式工进方式,运动机头由电机拖动行走定位。
Pneumatic drive, linear feed. Adjustable head can be pulled to set positions by drive motor.
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