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.
本文通过可展曲面
不变量,导出可展面曲率线与曲率特
,并以锥面和切线曲面为例阐明这些特
何意义。
)正射投影图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.
本文通过可展曲面不变量,导出可展面曲率线与曲率特,并以锥面和切线曲面为例阐明这些特何意义。
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