| 单词 | conic section |
| 释义 | conic section in British Englishnoun 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 Often shortened to: conicconic section in American English noun 1. a curve, either an ellipse, circle, parabola, or hyperbola, produced by the intersectionof a plane with a right circular cone 2. [pl., with sing. v.] the branch of geometry dealing with ellipses, circles, parabolas, and hyperbolas : also ˈconics noun |
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