一般地说横波速度大约是纵波速度的一半。

Normally the shear velocity is about half of the compressional velocity.

youdao

地震波速度是地震勘探中最重要的一个参数，而VSP测量是一种比较直接且行之有效的获取地震波速度的方法。

Velocity is the most important parameter in seismic survey, and VSP is a direct and valid way in acquiring it.

youdao

波速度与裂隙密度成反比关系。

The P wave is inversely proportional to crack density.

youdao

Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.

好了，我们已经定义了，这些术语，我们知道了，频率和波长，现在可以来考虑,波的速度了，特别是光波的速度，速度等于它走过的距离,除以所用的时间，因为我们。

麻省理工公开课 - 化学原理课程节选