Author(s): DING Dian-kun
Pages: 76-79
Year: 2007 Issue:  4
Journal: JOURNAL OF QIQIHAR UNIVERSITY(NATURAL SCIENCE EDITION)
Keyword:  空间几何体; 柱体; 投影区域; 求法;
Abstract: 首先给出了关于平面投影柱面方程的求法,从而得到了投影柱面围成的柱体,进而又给出了空间几何体在平面上投影区域的求法,并给予证明,使求柱体和投影区域方便灵活.