This paper reviews two dimensional electron gas formed on the liquid helium surface, the semiconductor surface space charge layer and the compound semiconductor heterojunction interface.
本文简要介绍了液氦表面、半导体表面空间电荷层和化合物半导体异质结界面的二维电子气。
2
The scavenging effect of selenium on peroxy radical was directly investigated with two kinds of selenium compound by means of electron spin resonance (ESR) technique.
运用电子自旋共振（ESR）技术直接观察了两种硒的化合物对过氧自由基的清除作用。
3
Sand culture experiment, electron microscopy technique were used to investigate the compound effects of nitrogen and zinc on nodule development and ultrastructure of white clover.