directrix

directrix读音音标

英 [dɪ\'rektrɪks]

美 [dɪ\'rektrɪks]

directrix意思解释

n.

准线；

英英释义

In mathematics, a directrix is a straight line associated to a geometric object, such as:

双语例句

用作名词(n.)Based on the geometry characteristics of Bertrand surfaces, the complicated surface conjugation issue can be discussed with their directrix line.基于白川德曲面的几何特征，将复杂的曲面共轭问题归结到准线上来讨论。The surface generated by a straight line,the generator,passing through a fixed point,the vertex,and moving along a fixed curve,the directrix.锥面由一条直线，即母线，通过一固定点，即顶点，沿一给定曲线，即准线，连续移动而产生的平面。