波频率越低，其传播距离越远、穿透性越强。

The lower the frequency of the wave, the farther it can travel or penetrate physical objects.

youdao

给出了毫米波频率步进雷达理想情况下一维距离像成像原理。

The principle of MMW stepped frequency radar for one dimension range imaging in ideal condition is introduced.

youdao

解，推导出电磁波能量衰减与电磁波频率和等离子体密度的关系式。

B solution, the function of wave attenuation, wave frequency and plasma density is deduced.

youdao

So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

So, we should be able to look at different types of waves and be able to figure out something about both their frequency and their wavelength and know the relationship between the two.

我们可以看到,不同的波并从它们的,波长和频率中,获得一些信息，我们知道。

麻省理工公开课 - 化学原理课程节选

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