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。

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.

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第一代MRAM的数据写入方式主要是向导线中通电使其周围产生磁场，从而改变邻近的存储单元的磁化程度。

Most MRAMs that are now being developed write data by applying the magnetic field generated by a current running through a wire near a tunneling magnetoresistive element to change the magnetization.

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其一是，放在磁场中，它就会产生著名的相对论量子霍尔效应。 这（为你的分析家发危险工作津贴）意味着准粒子存在于磁化的石墨烯中。

One of these is that if it is placed in a magnetic field it exhibits a phenomenon known as the relativistic quantum Hall effect.

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You've got a magnetic field, maybe even magnetic susceptibility, the electric field. We're not going to worry about these magnetic fields or electric fields in this class So, pretty much we're going to focus on this set of variables here.

你也会引入磁场，或许甚至磁化率，以及电场，我们这堂课不需要关心,这些磁场或,电场之类的东西,基本上我们只关注,这里的一组变量。

麻省理工公开课 - 热力学与动力学课程节选