Well it's kinetic energy, the actual speed of the particles.

嗯，它是动能，粒子的实际速度。

An electric wire puts it in contact with the patent log; this needle shows me the actual speed of my submersible.

一根电线把它跟测程器的螺旋桨连接起来，它上面的长针给我指出船行的实际快慢。

So, how does the root mean square speed compare to the actual speeds of the molecules in the gas?

那么，rms 速度如何比较 气体中分子的正常速度？

Using the robot's speed sensor, we can keep track of its actual speed and plot that alongside its desired speed.

用机器人的速度传感器，我们可以把当前速度和目标速度画张图。

This footage, here almost 700 times slower than its actual speed, was used to create a 3D model that could show exactly how the wing was moving.

这段比实际速度慢近 700 倍的镜头被用来创建一个 3D 模型，可以准确显示机翼的移动方式。

Then there's the performance. Now, this is a fanless laptop which is a big reason why it is so tiny but because of that, you give up a fair bit of actual speed.

然后是性能。因为这款手提电脑是没有散热扇的，所以它才那么迷你，也正因如此，它牺牲了速度。