摘要
给出并证明过旋转轴上一点,关于一类旋转曲面切面的几何确定.
The essay defines and proves the geometric definition of the tangent plane of the first kind rotating surface, such as rectangle rotating ellipsoid, double fourier rotating hyperboloid and rotating paraboloid through one point of rotation axis.
出处
《保定师范专科学校学报》
2007年第2期12-15,共4页
Journal of Baoding Teachers College
关键词
旋转曲面
旋转轴
切面
rotating surface
rotation axis
tangent plane
