单行多图显示

\begin{figure}[t!] % case 1\centering\setlength{\tabcolsep}{0.5pt} % 图片之间的距离为0.5 point\begin{tabular}{ccc}\includegraphics[width=0.30\linewidth, height=0.33\linewidth]{pic/xuLun/thin.png} &\includegraphics[width=0.30\linewidth, height=0.33\linewidth]{pic/xuLun/thick.png} &\includegraphics[width=0.30\linewidth, height=0.33\linewidth]{pic/xuLun/thinAndThick.png} \\(a) & (b) & (c)\\\end{tabular}\caption{云污染遥感图像。（a）薄云污染的遥感图像；（b）厚云和阴影污染的遥感图像；（c）薄云、厚云和阴影污染的遥感图像。}\label{pic1-1}
\end{figure}

双栏插入图片

参考博客 latex分栏后插入图片却不显示解决方法

\newenvironment{figurehere} {\def\@captype{figure}} {} 
\makeatother%用于连接公式编号\begin{multicols}{2}
\begin{figurehere}\centering\includegraphics[width=0.8\linewidth]{imgs/STC89C52.png}
\end{figurehere}\end{multicols}