图片摘要

toc是table of content的简写，换句话说就是图文摘要

Table of Content (TOC) means the graphic abstract that describes your work. Just put it at the right place in the manuscript according to author guidline of the journal.

A copy of the TOC is enclosed for helpful references that may support your publication and please ensure it is not the same as something published previously.

有两重意思，如果你文中有TOC，那么就需要确保跟已经发表的文章中的不一样；如果没有TOC，那么就需要你加一个并确保跟已经发表的文章中的不一样，

TOC图是什么图，TOC难道不是 table of contents，就是文章目录的意思？

让你做个图  很正常