我有以下表格，该表格延伸到多页。有人能帮我弄清楚如何控制列宽，以便第二列和第三列具有最大宽度，而其他三列具有最小宽度，并且文本居中对齐吗？
我尝试了在线发布的解决方案，但我的文本格式不正确或表格不适合页面宽度。
\documentclass{article}
\usepackage{xltabular}
\title{A longtable + tabularx example, using xltabular}
\begin{document}
\begin{xltabular}{\textwidth}{|c|X|X|X|X|}
\caption{Planning overview} \label{tab:long} \\
\hline \multicolumn{1}{|c|}{\textbf{Sl. No}} & \multicolumn{1}{c|}{\textbf{Research Question}} & \multicolumn{1}{c|}{\textbf{Corresponding Experiment}} & \multicolumn{1}{c|}{\textbf{No of weeks}}& \multicolumn{1}{c|}{\textbf{Timeframe}}\\ \hline
\endfirsthead
\multicolumn{3}{c}%
{\tablename\ \thetable{} -- continued from previous page} \\
\hline \multicolumn{1}{|c|}{\textbf{Sl. No}} & \multicolumn{1}{c|}{\textbf{Research Question}} & \multicolumn{1}{c|}{\textbf{Corresponding Experiment}} & \multicolumn{1}{c|}{\textbf{No of weeks}}& \multicolumn{1}{c|}{\textbf{Timeframe}}\\ \hline
\endhead
\hline \multicolumn{5}{|r|}{{Continued on next page}} \\ \hline
\endfoot
\hline
\endlastfoot
One & abcdef ghjijklmn & 123.456778 & 1 & 7 Jun - 25 Jun
(parallely with step 4 and 5)\\
\end{xltabular}
\end{document}
图像如下所示：
答案1
以下可能更接近预期的输出？
\documentclass{article}
\usepackage{makecell,calc}
\renewcommand{\theadfont}{\bfseries}
\usepackage{xltabular}
\title{A longtable + tabularx example, using xltabular}
\begin{document}
\begin{xltabular}{\textwidth}{|c|X|X|c|>{\centering\arraybackslash}p{2cm}|}
\caption{Planning overview} \label{tab:long} \\
\hline \thead{Sl. No} & \thead{Research\\ Question} & \thead{Corresponding\\ Experiment} & \thead{No of\\ weeks}&\thead{Timeframe}\\ \hline
\endfirsthead
\caption[]{Planning overview -- continued from previous page} \\
\hline \thead{Sl. No} & \thead{Research\\ Question} & \thead{Corresponding\\ Experiment} & \thead{No of\\ weeks}&\thead{Timeframe}\\ \hline
\endhead
\hline \multicolumn{5}{|r|}{{Continued on next page}} \\ \hline
\endfoot
\hline
\endlastfoot
One & abcdef ghjijklmn & 123.456778 & 1 & 7 Jun - 25 Jun
(parallely with step 4 and 5)\\
\end{xltabular}
\end{document}