valence electron density

• 电子密度

valence electron density的用法和样例：

例句

1. The electron dense deposits by electron microscopy at high magnification are seen here.
   图示电子显微镜高倍视野下的高电子密度沉积物。
2. The ability of the ionosphere to reflect these waves is dependent upon normal variations in the electron density at different levels.
   电离层反射电波的能力取决于不同高度上电子密度的正常差别。