To ensure the good operation of mechanical presses during their work cycle, it requires that the accessorial systems of mechanical presses must act with the rotation of the crank .
英
美
释义
为了使机械压力机在其工作周期内统一、协调地进行工作,要求机械压力机曲轴旋转到一定角度时相应的辅助装置动作。
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