求翻译：凸轮机构是高副机构，点接触或在传动链中引入齿轮传动，会产生空回现象，进而导致整个机构响应速度慢、重复定位精度差是什么意思？

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cam institution is high point contact Deputy agency, or the transmission chain gear transmission introduced, will result in empty back, leading in turn to the whole body is slower, and response to repeat positioning accuracy rates

The cam gear is the high vice-organization, selects the contact or introduces the gear drive in the transmission chain, can produce returns to the phenomenon spatially, then causes the entire organization speed of response slow, the redundant pointing accuracy to be bad

Cam is higher-pair mechanism, introduced in point contact or in the transmission chain gear, will have a backlash, which in turn causes the entire body responses are slow, poor positioning repeatability

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