Because the spin-flip length is longer than the electron mean-free-path in a metal, past studies of spin-flip scattering were limited to the diffusive regime.
金属中自旋翻转散射长度远长于电子平均自由程，近来关于自旋翻转散射效应的研究主要集中于扩散区域。
2
No one is listening. Everyone is jammed around the 800 tables, focused on the flip of cards, the spin of the roulette wheel or the roll of dice.
没有人在听。每个人都挤在800张赌台的周围，目不转睛地盯着翻开的纸牌、旋转的轮盘或者滚动的骰子。
3
If the frequency of these microwaves is just right, they will flip an anti-atom's spin.