| 单词 | parabola |
| 释义 | parabola (once / 8035 pages) n When a quadratic function is graphed, it forms a parabola, a u-shaped curve that has to meet certain technical mathematical requirements. Think of the narrow curve at the end of an oval and you can imagine a parabola. Imagine a traffic cone. If you look at it from the side, it looks like a triangle. Now imagine a plane, like a sheet of metal, slicing through the cone and parallel to one of the sides. If the plane is removed and the cone turned to that side, the edges of the sliced area would form a parabola. This curved shape is the path followed by something as it moves through the air and is affected by gravity. WORD FAMILYparabola: parabolas, parabolic, paraboloid+/parabolic: parabolically/paraboloid: paraboloidal, paraboloids USAGE EXAMPLESAbbs handles the parabola of this real life story with tremendous assurance. The Guardian(Dec 31, 2016) The actuators tug the dish into a parabola by pulling on tie-down cables connected to the dish’s supporting mesh. Science Magazine(Sep 26, 2016) Try buying or making your own parabola if you're trying to catch something super specific from farther away. The Verge(Aug 28, 2016) n a plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve Hyper conic, conic section (geometry) a curve generated by the intersection of a plane and a circular cone |
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