我试图让规则均匀分布
\begin{center}
\rule{\textwidth}{.6pt}
\end{center}
\begin{figure}[H]
\centering
\rule{0.5cm}{0.5cm}
\end{figure}
\begin{center}
\rule{\textwidth}{.6pt}
\end{center}
我试图让规则均匀分布
\begin{center}
\rule{\textwidth}{.6pt}
\end{center}
\begin{figure}[H]
\centering
\rule{0.5cm}{0.5cm}
\end{figure}
\begin{center}
\rule{\textwidth}{.6pt}
\end{center}