平面相交圆锥为椭圆时的投影分析  

Analysis of the Projection on the Ellipse when a Plane intersects the Cone

作　　者：赵炳利[1] 伍友新[1] 贾春玉[1] 于敏之[1] 

机构地区：[1]燕山大学机械工程学院

出　　处：《燕山大学学报》1998年第3期263-265,共3页Journal of Yanshan University

摘　　要：针对圆锥截交线为椭圆时的情况，利用解析法和图示法给出了椭圆投影为圆的几何条件，为教学和科研提供了理论依据和作图方法．According to the fact that the intersecting line when an ellipse, this paper gives the conditions when the projection of this ellipse becomes circle with analytic and graphic methods, which provides the theory basis and drawing method for the teaching and research.

关 键 词：椭圆 圆锥 投影 圆锥截交线 工程制图 

分 类 号：TB23[一般工业技术—工程设计测绘] TH126[机械工程—机械设计及理论]