更新 chapterpreface.tex

daf2bdd2 · 曹润柘 · 9924ff7d · daf2bdd2
Commit daf2bdd2 authored May 29, 2020 by 曹润柘
--- a/Book/ChapterPreface/chapterpreface.tex
+++ b/Book/ChapterPreface/chapterpreface.tex
@@ -57,6 +57,8 @@
 \centering
 \centering
 \input{./ChapterPreface/Figures/figure-preface}
+\caption{本书各章节及核心概念关系图}
+\label{fig:preface}
 \end{figure}
 %-------------------------------------------