按照母线的约束，形成广义白川德曲线族，进而构造出白川德曲面。
According to the restriction of the generatrix line Bertrand surface can be constructed with the Bertrand curve with broad sense group.
文摘：给出了一种基于等高线求解坡度约束下曲面上两点间最短路径的搜索算法。
Abstract: a path searching algorithm using contour is presented to obtain the shortest path between two points on a curved surface under the slope constraint.
提出了一种具有线约束的曲面四边形网格自动生成算法。
A quadrilateral mesh generation algorithm is presented for curved surface with line constraints.
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