quadric

特殊用法absolute quadric1.绝对二次曲面concentric quadric1.同心二次曲面confocal quadric1.共焦二次曲面Darboux's quadric1.达布二次曲面degenerate quadric1.退化二次曲面, 可约二次曲面improper quadric1.退化二次曲面Lie's quadric1.李氏二次曲面nonsingular quadric1.非奇[异]二次曲面, 满秩二次曲面osculating quadric1.密切二次曲面outpolar quadrics1.外配极二次曲面proper quadric1.正常二次曲面, 常态二次曲面singular quadric1.奇[异]二次曲面stress quadric1.应力二次式unruled quadric1.非直纹二次曲面quadric of deformation1.形变二次式quadric of revolution1.回转二次曲面
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