| 单词 | parabola |
| 释义 | parabola /peuh rab"euh leuh/, n. Geom. a plane curve formed by the intersection of a right circular cone with a plane parallel to a generator of the cone; the set of points in a plane that are equidistant from a fixed line and a fixed point in the same plane or in a parallel plane. Equation: y2 = 2px or x2 = 2py. See diag. under conic section. [1570-80; < NL < Gk parabolé an application. See PARABLE] |
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