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.
本文通过可展的微分不变量,导出可展的线特,并和切线为例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.
本文通过可展的微分不变量,导出可展的线特,并和切线为例阐明这些特性的几何意义。
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