Again, your common sense tells you, "Look, you are pulling something whose effective mass seems to be 5, the answer is 2."

你的常识会又一次告诉你,"你在拉一个相当于 5 千克的物体,所以加速度是 2 "

耶鲁公开课 - 基础物理课程节选

We know that it has to be equal to less than 2, because even if we had absolutely no shielding at 2 all, the highest z effective we could have is 2, so it makes perfect sense that we have a z effective that falls somewhere in the middle of those two.

我们知道它必须小于，因为即使完全没有一点屏蔽,最高的有效的z是，所以我们得到的有效电荷量处于,两者之间就非常讲得通了,让我们来看看另一个例子。

麻省理工公开课 - 化学原理课程节选