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

它们中的一些可能是顺时针旋转的，在这种情况下，根据右手定则，我们认为它们是向下旋转的。

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With the magnetic field turned on, the iron layers both magnetize, say, in the spin-up direction, so all of the spin-down electrons move through the entire sample without scattering.

加上磁场后，两个铁层都被磁化，假如是上方向，那么所有下自旋的电子移动通过整个样本都没有散射。

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In this scenario, all the electrons eventually scatter during their long trip along the sandwich: the spin-up electrons from one iron layer and the spin-down electrons from the other.

在这种情况下，所有的电子在其沿着三明治的长途旅行中最终都散射。上自旋的电子从一个铁层，下自旋的电子从另一个。

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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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