Handling the machine manually, use the additional speed switch (the handle multiplier), which can change the value of displacement equal to one skip on the scale of the hand-wheel.
人工操作机床，使用附加速度开关(手动倍率开关)能改变手动轮一个刻度的位移量。
Solenoid valve, hand wheel, valve position switch, air filter regulator and so on.
电磁阀、手轮机构、阀位开关、空气过滤减压器等。
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