Quadric

[kwɒdrik]

解释:

(noun.) a curve or surface whose equation (in Cartesian coordinates) is of the second degree.

杜安整理--From WordNet

解释:

(a.) Of or pertaining to the second degree.

(n.) A quantic of the second degree. See Quantic.

(n.) A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics.

格雷西校对

解释:

adj. (alg.) of the second degree quadratic—esp. in solid geometry and where there are more than two variables.—n. Quad′ricone a quadric cone.

格特鲁德编辑