摘要
将二次曲线的一些性质推广到有心二次曲面 ,得到有心二次曲面的几个定理 。
This essay transfers some properties of conic section to cone with center. Hence, the properties of cones are obtained and the internal relationship among cones are also revealed.
出处
《郧阳师范高等专科学校学报》
2001年第6期19-20,共2页
Journal of Yunyang Teachers College
关键词
有心二次曲面
切平面
切点
cone with center
cutting surface
cutting point
