The J-slot profile creates the track for an actuating CAM or pin that combines rotation and up or down movement to provide a simple yet reliable means of tool activation.

钩形槽的型面为主动凸轮或销钉(它使旋转与向下或向上移动相结合)提供轨道，于是提供了简单的但又可靠的启动工具的方法。

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