Atoms of different elements have different weights and different chemical properties.

不同元素的原子的质量不同,化学特性也不相同。

麻省理工公开课 - 固态化学导论课程节选

The thesis of 3.091, and this is where the chemistry comes in, is that electronic structure of the elements holds the key to the understanding, not just the chemical bonding, but the long range atomic order.

这是这门课的论点，这是化学的研究点，也就是元素的电子结构,那即是理解的关键，不只是化学键，还有长程的原子排序。

麻省理工公开课 - 固态化学导论课程节选

Generally, there are a couple of elements that one might set down as in a Petri dish, and wait to see if some chemical reaction might take place, but not at all sure of what it might be.

一般来说，都有几个元素,作者会把它们像放入培养基中一样培养,等待某种化学反应的产生，但对可能的结果却一无所知。

普林斯顿公开课 - 人性课程节选