圆锥曲线（等于conic）

conic section───圆锥曲线（等于conic）

conic projections───[测]圆锥投影

centre sections───中间区段；中间组

panic reactions───恐慌反应

economic sanctions───经济制裁

codirections───共同领导

conceptions───[妇产]怀孕；概念；设想；开始（conception的复数形式）

concoctions───n.混合；调合；调合物

concretions───n.结石；凝固；凝固物

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。

Greek mathematician who first defined the conic sections called the parabola, hyperbola, and ellipse.───古希腊数学家，他最早定义了称为抛物线、双曲线和椭圆的圆锥形部分。

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。

Apollonius is chiefly noted for his work on conic sections.───亚婆罗尼主要地是以他对于圆锥曲线的研究而闻名的。

Conic sections and quadric surfaces .───二次曲线与二次曲面。

Motion of planets and comets in conic sections ; Kepler's laws .───在锥截面上的行星与彗星的运动；开普勒定律。

Seeking the Curvature Radius of a Point on the Conic Sections by Means of Kinetic Method───用动力学方法求圆锥截线上各点的曲率半径

online freehand sketching recognition using primarily conic sections───基于二次曲线的在线手绘图识别

His chief work was on the conic sections but he also wrote on other subjects.

Some examples are given by inscribed and circumscribed circles of polygons, lines intersecting and tangent to conic sections, the Pappus and Menelaus configurations of points and lines.