内啮合齿轮泵中的小齿轮是主动轮，大齿轮为从动轮，在工作时大齿轮随小齿轮同向旋转。
Internal gear pump is the small gear wheel, the big gear for driven wheel, in work big gear with small gear cocurrent rotation.
揭示了基于点啮合原理的齿轮加工与测量的实质，并阐述了接触迹在齿轮加工与测量中的应用。
The gear machining and measuring essence based on the point engaging principle are revealed, moreover the application of contact trace in gear machining and measuring is expounded.
内齿轮在工业中应用十分广泛，对内啮合齿轮传动的特点进行了分析。
It is very extensive that the interior gear wheel is used in industry.
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