We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.

我们有一个元素表，其中的元素的特性,随着原子质量的改变而引起周期性的变化，所以我们将所有的信息精简,将它变成一个周期表。

麻省理工公开课 - 固态化学导论课程节选

So it turns out that we can really know a lot just by looking at the periodic table.

可见，我们只是看看元素周期表,就能知道很多信息。

麻省理工公开课 - 化学原理课程节选