He has all the information he knows that has been reported on the various elements on file cards He even carried them around in his pocket and he would look at them from time to time and try to devise a scheme.

他将所有他知道的,已经研究出来的元素的信息放到文件卡片上,他将它们随身携带在口袋里,这样他就可以时不时地看它们了,并且试图设计出一个图表。

麻省理工公开课 - 固态化学导论课程节选

And, if you laid this out in a table, as Mendeleev did with his cards, you would find that the local maxima all occur roughly in the same horizontal position from the end points of the rows.

如果你们这些放到一张表格上去，像是门捷列夫用纸牌做的那样，你会发现局部的最高点,会出现在同一个水平高度,从这些行的最后一点。

麻省理工公开课 - 固态化学导论课程节选