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本文定义了伪黎曼空间型中的旋转超曲面，并给出其参数表达式及主曲率计算公式。 Rotation hypersurfaces in pseudo-Riemannian space forms are defined and their explicit parametrizations are given in the present paper, and their principal curvatures are computed. | ||
本文主要研究四元数射影空间中的特殊曲面-极小曲面。 Minimal surfaces is the surface whose average curvature is zero. | ||
这样将两基曲面间构造过渡曲面的问题转化为在重新参数化局部基曲面间构造过渡曲面。 Therefore, generating a Parametric G n Blending Surface between two base surfaces is translated into generating a Parametric G n Blending Surface between the two reparameterized local base surfaces. | ||
曲率是黎曼几何中的热门研究课题。 Positive curvature has been a frequent subject in Riemannian geometry. | ||
这个曲面是一个双曲抛物面。 This one is a hyperbolic parabloid. | ||
该两个翼型处在不同的黎曼面内。 These two airfoils lie on different Riemann sheets in the hodograph plane. | ||
提出基于补丁曲面质量检测线（反射线或高亮线）局部光顺NURBS曲面算法。 An efficient NURBS surface local fairing method was presented based on quality detection lines(reflection lines or highlight lines)of the patch. | ||
微分几何中的曲面论，用两个变量就可以完全参数化一个二维曲面。 According to surface theory in differential geometry, the two-dimensional surface is parameterized by two variables. | ||
一条与曲面相切的直线。 And that line is tangent to the surface. | ||
与一个旋转曲面是等距对应的； S is isometric to a surface of revolution. | ||
