reciprocating main motion 往复主运动 reciprocating feed motion 往复式进给运动 reciprocating-motion vertical conveyer 往复式垂直输送机 .
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Grinding wheel for the rotating main movement, workbench as a vertical reciprocating motion, grinding wheel rack for intermittent movement into the vertical and horizontal feed movement.
砂轮作旋转主运动,工作台作纵向往复运动,砂轮架作间歇的竖直切入运动和横向进给运动。
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