The formula of the curve tangent slope at some peculiar point in the orthograph on the stereoscopic surface intersecting line and the method of making tangent are given as well.
过可展曲面的微分不变量,导出可展面的曲率线与曲率特
,并
锥面和切线曲面为
阐明这些特性的几何意义。
The formula of the curve tangent slope at some peculiar point in the orthograph on the stereoscopic surface intersecting line and the method of making tangent are given as well.
过可展曲面的微分不变量,导出可展面的曲率线与曲率特,并锥面和切线曲面为阐明这些特性的几何意义。
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