Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.

由于 P 波和 S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。

youdao

So, maybe my point, P, now, is here.

点P，现在在这。

youdao

Let's first look at the situation at point p.

首先请看点p的情形。

youdao

And what I want to point out here is this angular dependence for the p orbitals for the l equals 1 orbital.

这里我要指出的是,ｌ等于１的ｐ轨道随角度的变化。

麻省理工公开课 - 化学原理课程节选

So for example I defined p, remember back over here, as a Cartesian point, but I can actually ask for its polar form.

我可以要求返回它的极坐标形式，这里对我是可访问的，好，这很棒，请再记另外一个为什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

And our job is to find out what is the mathematical description of this path, this line in p-V's case that connects these two point.

我们的任务,就是找出，描述这条曲线的方程。

麻省理工公开课 - 热力学与动力学课程节选

He said neither of them knew what went wrong, but at some point around 5:20 p.m.

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"He has a different skill set than all of our point guards, " coach P.

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Not to be an Eeyore, but I should point out that with 9 p.m.

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