运动的法线方程；
根据渐近曲线的方程，具体给出主法线曲面的一族非直线的渐近曲线。
According to the equation of asymptotic curves, a family of nonlinear asymptotic curves are given to the principal normal surface.
利用光波面和光波法线面的曲线方程，得出了光波面上光轴角和光线轴角的表达式。
The expression of optic axial Angle and ray axial Angle on light wave plane can be obtained by using the curve equations of the wavefront of light wave and normal plane of light wave.
同时利用齿廓法线法得出与该复合齿轮相配套的销轨齿廓方程。
Meanwhile obtained the tooth profile equation of pin-track by the tooth profile normal law which matched the inviolate-cycloid compound gear.
根据椭圆与其法线的几何特征关系建立了求解法线的解析方程，分析了法线问题解析求解的繁杂性。
According to the relationship between ellipse and its normal, the analytic equation of ellipse normal solution is built as well as the complicacy of analytic method.
根据椭圆与其法线的几何特征关系建立了求解法线的解析方程，分析了法线问题解析求解的繁杂性。
According to the relationship between ellipse and its normal, the analytic equation of ellipse normal solution is built as well as the complicacy of analytic method.
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