To take an extreme example, imagine that an electron does not scatter in an iron layer unless its spin points in the same direction as the layer's magnetization.
举一个极端的例子,假设一个电子没有在一个铁层散射,除非与层的磁化方向相同地旋转。
2
In extreme cold and wind, we recommend a base layer (that is, thermal underwear constructed from high-tech, breathable fabrics) under a wind-resistant pants.