In the presence of impurities or in a nonstoichiometric solid, free electrons or electron holes are produced as a result of “charge compensation” to neutralize the effect of charged ionic defects 。
在杂质存在的情况下,或在非化学计量比的固体中,为了中和带电离子缺陷所引起的电荷不平
,




电子或电子空穴。


理工学院的工程师们说,他们已经开发并驾驶了一架由

螺丝刀递给我 Morty, hand me that screwdriver, huh? 我的
定一起,强化材料强度,就像用硫磺固定处理一样。



