Obviously, to choose shifting time accurately is a key to realize single machine test.

显而易见，正确地选择切换时机是实现单机测试的关键。

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Study of determining method of number of gear teeth in shifting system of machine tools;

提出了按等强齿数确定闭式齿轮传动设计准则的新方法。

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Study of determining method of number of gear teeth in shifting system of machine tools;

提出了按等强齿数确定闭式齿轮传动设计准则的新方法。

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