this paper deals with the graphics of the intersections and common tangents of two conics according to projective geometry .
在射影几何的范畴内,全面地论述了两二次曲线的公有点和公切线的图解问题。
conics is a difficult section in the analytic geometry for senior high school students.
圆锥曲线是高中生解析几何学习中的一个难点。
apply the theory of pencil of conics to reveal the geometric significance of simultaneous equations of second degree with two unknows.
应用二次曲线束理论揭示解二元二次方程组的几何意义。
in this paper, a new method of representing a conic in three-dimensional space is proposed. the concept of the coordinates of the conics in two-dimensional and three-dimensional space is defined.
automatic identification method of conics is studied based on the curve geometric invariants.
讨论了基于二次曲线不变量的圆锥曲线特征自动识别方法。
in this paper, instead of corresponding image points which are widely used in the literature, corresponding image conics are used to calibrate a rotating camera.
研究探讨了一种基于平面二次曲线的纯旋转摄像机自标定方法。
the parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area.