以最大工作进给速度的变化比率为阈值，把零件表面的法曲率半径划分为不同的区域；
Using the changing rate of maximum feed-rate as a threshold, the surface of the part is divided into different areas according to the values of normal curvature radius.
本文论述了用波差法求解星模拟器上的光学系统各透镜光焦度和曲率半径的方法。
The method is argued in the paper which is used to obtain dioptrie and radius of lens of optical system on the apparatus of artificial star by wave aberration.
对坐标转换的基本概念和基本公式做了研究，给出了法截线曲率半径、子午线弧长和底点纬度的解算公式。
Research the basal concepts and formulas of coordinate conversion, the formulas of the radius of curvature in a normal section, the meridional length and the latitude of pedal are given.
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