注意我旋转它的方式。

Notice the way I'm spinning it.

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旋转它，然后看，摩擦力抵消动能，转化成热能。

I'm rotating it, and you see that friction is taking out kinetic energy and it's converting it to heat.

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她拿了我的一个白色主教，并且像它在地上一样开始旋转它。

She picks up one of my white bishops, and spins it on the ground like a top.

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This machinery is so precise that a human hair couldn't even pass between the heads and spinning platters, yet it all works in terrific speeds.

这些设备是很紧密的以至于人的头发,都不能在头和旋转的磁盘之间通过，尽管如此，它的运行速度非常快。

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So, let me go had and let's swivel this around for just a moment so we have a blank slate and now what's really going on?

我把它旋转一下,这样就有一块空白了,到底发生了什么呢？

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So another way to think about that is just the rotational kinetic energy of our electron.

或者，这样想,它是，电子旋转的动能。

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