foot of a perpendicular 垂足 ; 交点叫垂足
erect a perpendicular 画一线与之成直角
a perpendicular cliff 陡峭的悬崖
a perpendicular escarpment 垂直的峭壁
a perpendicular anisotropic 垂直各向异性
We made two slits for the eyes and a perpendicular line for the nose.
我们划了两道缝儿做眼睛,一条竖线做鼻子。
The wall is a little out of the perpendicular.
墙壁有点倾斜。
When a surface is perpendicular to the rays, their intensity is at its maximum.
当表面与射线垂直时,射线的强度最大。
So what she's going to do is start loading up the electrons, and you see this wand here move slowly, and it takes a while to do it, start become perpendicular.
所以她将要加载电子,你们看到这个棒慢慢地移动,这个需要一段时间,开始变得垂直了。
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。
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