Otis B.Driftwood. And Doctor Hugo Z.Hackenbush.

VOA: special.2009.07.19

In an extreme case b, we had a z effective of 2, so essentially what we had was no shielding at all.

我们有效的z是，所以本质上我们完全没有屏蔽。

麻省理工公开课 - 化学原理课程节选

The electron completely canceled out 1 it's equivalent of charge from the nucleus, such that we only saw in a z effective of 1.

电子完全抵消了来自原子核的等量电荷,这样我们仅仅看到有效的z为，在极端案例b中。

麻省理工公开课 - 化学原理课程节选