directrix

directrix

美 [dɪ'rektrɪks] 　英 [dɪ'rektrɪks]

• n.【数】准线；〈古〉同“directress”
• 网络抛物线的准线；导面

词形变化

复数：directrixes  复数：directrices  

英汉解释

n.	1. 【数】准线 2. 〈古〉同“directress”

英英解释

n.	1. <archaic>Same as directress

例句

A fixed point whose relationship with a directrix determines a conic section.

焦点一个与准线的关系决定圆锥形状的定点

The directrix line of a conic.

二次曲线的准线。

Select the directrix of the new conic. . .

选择新二次曲线的准线…

New Latin parametrum [a line through the focus and parallel to the directrix of a conic]

现代拉丁语parametrum[通过焦点并与圆锥曲线的准轴线平行的直线]

Developable Surfaces Generated by a Directrix

导线生成的可展曲面

Constructing Directrix for Conic Curve

圆锥曲线准线的几何作图