The equabions on tooth shape of internal gear by means of envelope method is derived and the pressure angle, inflection point, curvature, topcut are analysised in detail.
用包络法导出了内齿轮的齿形方程，对压力角、曲率、拐点、顶切进行了详细分析，并给出了计算公式。
The text introduces the conception of the radial angle, and uses it to explain the inflection of the side width, and establishes the formula of the radial angle.
本文引入扩散角的概念，用此概念说明桩侧边长度对于计算宽度的影响，从而建立计算宽度的计算公式。
We find the similarity of syntax between OE and Russian in modern Slavic and the reasons from a cross-linguistic Angle, after an analysis of inflection and syntactic traits in OE.
在简要分析了古英语的屈折性和句法特征之后，从跨语言的角度发现古英语句法和现代斯拉夫语族的俄语具有某些句法上的相似性，并找到存在差异的原因。
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