So you can see, if it's spinning on its own axis in this direction we'd call it spin up, where as this way it would be what we call spin down.

你们可以看到，如果它绕自己的轴朝这个方向转，我们就说它是自旋朝上，这个方向我们叫它自旋朝下。

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"If black holes grow by merging, by combinations of black holes, they should spin down quite quickly," Blandford explains.

如果黑洞是依靠合并来成长的，在合并的过程中，他们的旋转速度很快就会变慢。

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She sat down and tried to spin; but the threads cut her tender fingers till the blood ran.

她坐下来，试着纺线；但是这些线割破了她柔嫩的手指，鲜血直流。

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And some of them might be spinning clockwise, in which case, according to the right-hand rule we would consider them spin-down.

而另一些电子则是在顺时针自旋，在这种情况下，根据右手定理,我们会以为它是在向下转。

麻省理工公开课 - 固态化学导论课程节选

And, in any arbitrary crucible full of molten silver, half of them are going to be spin-up and half of them are going to be spin-down.

并且，在任一个浇满了熔银的坩埚中，银原子中的电子一半是向上转,另一半是向下转。

麻省理工公开课 - 固态化学导论课程节选

So this one is spin-up plus a half, this is spin-down minus a half.

所以自旋向上是正二分之一，而自旋向下是负二分之一。

麻省理工公开课 - 固态化学导论课程节选

Among the capabilities for open compute platforms are erasure codes but also control of HDD array energy use with drive spin-down (like the earlier MAID storage architectures that featured many idle drives).

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Could there be a spin-out down the road?

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Over the past two years, the company has made a "spin down" feature for hard-disk boxes, where if the TV has not been in use for several hours the disk rests.

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