The result showed that galena surfacestate interacted with adsorbates not only in overlap of orbitals, but in electron transfer between them.
结果表明：方铅矿表面态在与外来吸附质相互作用时，不仅有轨道重迭而且发生电子转移。
2
Some laws in solid state physics, derived from bulk effect, can not be effectively applied to electron emission which is mainly a surface phenomenon.
从体效应中总结出来的固体理论，不能有效地解释电子发射的问题，因为电子发射主要地来源于表面。
3
The state of beam electrode surface corrosion in 3d electrode is studied under different experimental conditions by using scanning electron microscopy (SEM).