A gene called DIx5 decreases it.

VOA: special.2009.12.22

We are expecting to see that it decreases because it's feeling a stronger pull, all the electrons are being pulled in closer to the nucleus, so that atomic size is going to get smaller.

我们将看到它是减小的,因为电子会感受到越来越强的吸引力，所有的电子将会被原子核拉得越来越近，所以原子半径将越来越小。

麻省理工公开课 - 化学原理课程节选

It decreases. If you're still not completely up on the periodic trends, that is stuff that's going to be on the first exam, so make sure that you're able to do this without taking too much time to think about it.

它会降低，如果你还没有完全掌握周期性规律，而这是第一次考试要求的内容，因此请务必做到不用,想太久就能做到这点。

麻省理工公开课 - 化学原理课程节选

(OMITTED) Clearly,this is all happening in the context of severe economic crisis, It's time to be smarter, about research as funding levels off or decreases.

VOA: standard.2010.07.15

And, within a column, it decreases down a column.

而且在一列内，它逐次递减。

麻省理工公开课 - 固态化学导论课程节选

It rises up a row. It decreases down the column.

在行内逐次增加，在列内逐次递减。

麻省理工公开课 - 固态化学导论课程节选