The variation of the sawtooth activity is mainly related to the impurityconcentration.
杂质聚中是锯齿活性变化的主要原因。
2
A series of general formulae of impurityconcentration distribution along the ingot after point-doping zone melting has been derived.
得到了点掺杂区熔后杂质沿锭长分布的一系列普遍公式。
3
The results show that the residual resistance ration relates not only to the aging temperature and the impurityconcentration of the metal, but also to the aging time.