Hence the name: root mean square.

均方根。

And that variable is the root-mean-squared, or RMS value, of current.

该变量 是电流的均方根或 RMS 。

And the root mean square speed is slightly to the right of that.

和均方根速度 边有点。

The square root of the average squared velocity is what we call the root mean square speed.

速率平方的平方根 就是我们所说的均方根速度。

Today, you learned about the kinetic theory of gases, and how to calculate the root mean square speed.

今天，我们了解了气体的动力学论， 以及我们如何计算均方根速度。