The school was organized on a perpendicular axis to the street.

学校的轴线垂直于街道。

youdao

So both are useful, and in assignment 7 I'll give you a simple problem so that you can apply the perpendicular axis theorem.

俩定理都有用，第七次作业中我会，给你们简单的问题，用到垂直轴定理。

youdao

A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.

抛物面一种有与单坐标轴平行的抛物截面和与该轴垂直的椭圆截面的平面。

youdao

The first one will be above and below the bond axis is where we'll see the electron density, and the second will be perpendicular to that, so it will be a density in front of and behind the bond axis.

第一个是在键轴之上和之下,我们可以看到电子密度，另外一个垂直于它，所以在键轴之前和之后有电子密度。

麻省理工公开课 - 化学原理课程节选

Pick any two perpendicular directions Then the same entity, the same arrow which has an existence of its own, independent of axis, can be described by you and me using different numbers.

选取两个互相垂直的方向,这样同样的物体,同一矢量,并且是独立于坐标轴而存在的,可以被你和我用不同的数字来描述

耶鲁公开课 - 基础物理课程节选