The helical cuts and ribs forced the bolt head to rotate on opening and closing stroke of the bolt, thus unlocking and locking it to the receiver.
螺旋肋被迫削减和螺栓头部旋转开幕式和闭幕式上的螺栓中风，从而解锁和锁定到接收器。
Stroke control mechanism for the regulation and precise control of valve opening and closing position.
行程控制机构，用以调节和准确控制阀门的启闭位置。
Double toggle mold closing system with a large force magnification ratio and a large stroke ratio.
角双曲肘合模装置，大增力比和大行程比。
Double toggle mold closing system with a large force magnification ratio and a large stroke ratio.
角双曲肘合模装置，大增力比和大行程比。
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