·2,447,543篇论文数据，部分数据来源于NoteExpress
N one of a group of curves formed by the intersection of a plane and a right circular cone. It is either a circle, ellipse, parabola, or hyperbola, depending on the eccentricity, e, which is constant for a particular curve e = 0 for a circle; e<1 for an ellipse; e = 1 for a parabola; e>1 for a hyperbola 圆锥曲线 (Often shortened to conic)
His chief work was on the conic sections but he also wrote on other subjects.
他的主要著作是关于圆锥线的，但也写过其他方面的著作。
But don't ask for an explanation of his elegant proof unless you are interested in conic sections.
但是不要要求对他的优雅证明的解释，除非你对圆锥截面感兴趣。
According to the homology character of conic sections, this paper analyses the condition setting homology construction and the construction form of typical positions.
从二次曲线间的透射性质，分析建立透射结构的条件，以及典型位置的透射结构形式，从而提出了对应曲线的作图。
应用推荐