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US5018401A Translation cam means 失效
翻译凸轮意味着

Translation cam means
摘要:
A translation cam arrangement comprises a translation cam and an accentric gear rotatably secured to the translation cam, and as the eccentric gear is rotated by a driving gear meshed therewith, the translation cam reciprocates in correspondence with various distances between centers of both the gears. Thus, there is no need of another cam arrangement for moving the translation cam.
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