directrix
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n.
准线；
英英释义
Directrix
In mathematics, a directrix is a straight line associated to a geometric object, such as:
以上来源于:Wikipedia
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。
权威例句
A Single Directrix Quasi-Minimal Model for Paper-Like SurfacesDux illa directrixque artium: Rudolph Agricola's dialectical system
A guidance directrix approach to vision-based vehicle guidance systems.
Computing Hironaka's invariants: Ridge and Directrix
A Robust Procedure to Obtain a Guidance Directrix for Vision-Based Vehicle Guidance Systems
An Algorithm for Computer Vision Sensing of a Row Crop Guidance Directrix
Research Development of Vision-based Guidance Directrix Recognition for Agriculture Vehicles
Algorithm Based on Image Processing Technology to Generate Navigation Directrix in Orchard
Dispersion Curves for Harmonic Waves Propagating Along the Directrix of a Cylindrical Shell Reinforced with Rings
High-frequency asymptotic solutions for backscattering by cylinders with conic section directrixes
1. Do some research to find the name of this conic and the how the words vertices, foci, centre and directrix relate to this shape.
做些搜索去找出这个二次曲线的名称以及顶点，焦点，中心点以及准线是怎样与这个图形有关的？
danci.911cha.com
2. The pity is that the first auxiliary directrix after modification is generally expressed in an algebraic form, because of the complexity of the vectorial expression.
遗憾的是，由于其矩阵表达式有些复杂，一般都将修改后的第一辅助准线表示为代数形式。
dict.cnki.net
3. The directrix line of a conic.
二次曲线的准线。
translations.launchpad.net
4. Based on the geometry characteristics of Bertrand surfaces, the complicated surface conjugation issue can be discussed with their directrix line.
在此基础上给出了准线应满足的基本条件、共轭曲面的诱导曲率、不干涉条件与准线曲率轴之间的关系等。
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5. Select the directrix of the new conic…
选择新二次曲线的准线…
translations.launchpad.net
6. Select the conic of which you want to construct the directrix…
选择新二次曲线的准线…
translations.launchpad.net
7. Select the conic of which you want to construct the directrix…
选择新二次曲线的准线…
translations.launchpad.net
8. directrix of cylinder
圆柱准线
-- 来源 -- 英汉 - 翻译参考[网络]
9. The surface generated by a straight line intersecting and moving along a closed plane curve, the directrix, while remaining parallel to a fixed straight line that is not on or parallel to the plane of the directrix.
柱面一条直线与一个封闭的平面曲线相交及沿着平面曲线移动所形成的平面，准线则与一个不在此准线平面上或者不与此准线平面平行的固定直线保持平行
-- 来源 -- 英汉 - 短句参考
10. directrix plane of a quadric cone
二次锥面的准平面
-- 来源 -- 英汉 - 翻译参考[网络]
11. 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
-- 来源 -- 英汉 - 短句参考
12. 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
-- 来源 -- 英汉 - 短句参考
13. scroll directrix
涡卷准线
-- 来源 -- 英汉 - 翻译参考[网络]
14. directrix of a conic
二次曲线的准线
-- 来源 -- 英汉 - 翻译参考[网络]
15. directrix curve
准曲线
-- 来源 -- 英汉 - 翻译参考[网络]
16. The guidance signal of vision guidance system consists of the lateral deviation and the orientation deviation between the guidance directrix and the vehicle axis.
视觉导航系统的导航信息是指导航线与车辆轴线的侧向位移偏差和角度偏著。
-- 来源 -- 网友提供
directrix
