Ease of use: Learning Eclipse takes some spin-up, especially if you would like to investigate all of the tools capabilities.
易用性：eclipse的学习过程有些曲折，尤其是当您想研究所有工具的功能时更是如此。
2
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。
3
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.