答案1
文本似乎设置为双列模式。然后浮动环境的星形形式使用页面顶部或底部的两列,例如:
\documentclass[12pt,twocolumn]{article}
\usepackage{lipsum}
\usepackage[a5paper,hmargin=10mm,vmargin=10mm,includefoot]{geometry}
\usepackage{xcolor}
\begin{document}
\begin{table}
\textcolor{gray}{\rule{12cm}{6cm}}
\caption{Table too large}
\end{table}
\begin{table*}
\textcolor{gray}{\rule{12cm}{6cm}}
\caption{Table spanning both columns}
\end{table*}
\lipsum[2-6]
\end{document}