directrix

释义

n.

【数】准线；〈古〉同“directress”

网络

抛物线的准线；导面

词形变化

复数：directrixes

在例句中理解 6 句

1. 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

2. The directrix line of a conic.

   二次曲线的准线。

3. Select the directrix of the new conic. . .

   选择新二次曲线的准线…

4. 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]

5. Developable Surfaces Generated by a Directrix

   导线生成的可展曲面

6. Constructing Directrix for Conic Curve

   圆锥曲线准线的几何作图