... 自由电子密度 density of free electrons （电）洞密度density of holes 游离密度 density of ionization ...
2
?虫孔密度
虫孔密度
双语例句
1
The densityofholes in the base is less than the densityof free electrons in the emitter and collector .
基极中空穴的密度小于发射极和集电极中自由电子的密度。
2
Tiny holes machining on printed circuit board becames more and more difficult with the demand of small size, light weight, high density and good reliability of electrical equipments.
随着电器产品小型、轻量、高密度和高可靠性的要求，印刷电路极微孔加工的难度越来越大。
3
The results indicated the arrayed rule, density and diameter of the drawing holes affect the limit drawing height of sheet metal drastically.