求翻译：　凸轮可以定义为一个具有曲面或曲槽之机件，利用其摆动或回转，可以使另一组件—从动子提供预先设定的运动。从动子之路径大部限制在一个滑槽内，以获得往覆运动。在其回复的行程中，有时依靠其本身之重量，但有些机构为获得确切的动作，常以弹簧作为回复之力，有些则利用导槽,使其在特定的路径上运动。是什么意思？

Cam can be defined as a surface or a curved groove of the parts, use the swing or turn, can make the other components - to provide pre-driven movement of the child. Most of the path follower sub-limit in a trough to get to cover sports. In its reply the trip, sometimes rely on their own weight, but

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　The cam may define of has part of the curved surface or the tune trough, uses its swinging or the rotation, may cause the movement which another module - driven provides establishes in advance.Driven way of big limits in a sliding way, obtains the reciprocal motion.Sometimes in its reply traveling

　Cams can be defined as parts of a surface or surface trough, using oscillating or rotating it, you can make another component-driven movement of the child provides a predetermined. From the path of most of the restrictions in a chute, to get to cover sport. In its reply to tour, sometimes relying o

　Cams can be defined as parts of a surface or surface trough, using oscillating or rotating it, you can make another component-driven movement of the child provides a predetermined. From the path of most of the restrictions in a chute, to get to cover sport. In its reply to tour, sometimes relying o