The speed motion in turning is provided by the rotating work-part, and the feed motion is achieved by the cutting tool moving slowly in a direction parallel to the axis of rotation of the work-piece.翻译为：车削中的速度运动是由旋转工作部件提供的，进给运动是由刀具沿与工件的旋转轴线平行的方向缓慢移动来实现的。