| 一般二次曲面为抛物柱面时位置的直接确定 |
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| 引用本文： | 许安国.一般二次曲面为抛物柱面时位置的直接确定[J].山东科技大学学报(自然科学版),1987(1). |
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| 作者姓名： | 许安国 |
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| 作者单位： | 山东矿业学院基础部 |
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| 摘 要： | 根椐二次曲面一般方程的系数,确定抛物柱面的顶点直线和开口方向,从而直接确定抛物柱面的位置。
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| 关 键 词： | 二次曲面 抛物柱面 顶点直线 开口方向 旋转变换 平移变换 |
THE DIRECT DETERMIATION OF THE POSITION OF THE PARABOLIC CYLINDER OF THE GENERAL QUADRATIC SURFACE |
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| Xu Anguo.THE DIRECT DETERMIATION OF THE POSITION OF THE PARABOLIC CYLINDER OF THE GENERAL QUADRATIC SURFACE[J].Journal of Shandong Univ of Sci and Technol: Nat Sci,1987(1). |
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| Authors: | Xu Anguo |
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| Institution: | Dept. of basic courses |
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| Abstract: | this paper presents the method of detenmination of the vertex-straight Line and the concavity of the parabolic cylinder determined according to the coefficient of the general equation of the quadratic surface, Therefore,the, coefficient positioa of the parabolic cylinder can be directly determined |
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