无法将长句子放入多行多列表格中

Question

抱歉，尽管我多次问过这个问题，但我似乎做不到。我是 LaTeX 的新手。

这是当前的代码和表格。

\documentclass[11pt, a4paper, notitlepage]{article}
\usepackage{array}
\usepackage{multirow}

\begin{table}[h]
\centering
\begin{tabular}{|l|c|c|c|c|}
\hline
\multirow{2}{*}{\parbox{8em}{Low and high voltage levels with 20\% duty cycle}} & \multicolumn{2}{c|}{voltage readings} & \multicolumn{2}{l|}{calculated values}  \tabularnewline
\cline{2-5}
    & DC & RMS & DC & RMS \tabularnewline
\hline
    &    &     &    & \tabularnewline
\hline
    &    &     &    & \tabularnewline
\hline
    &    &     &    & \tabularnewline
\hline
\end{tabular}
\end{table}

如上所示，左上角的长句子无法放入单元格中。我想制作这样的表格。

我很感激任何帮助。谢谢！

Answer 1

使用makecell在单元格内容周围添加垂直空间，并减少第一列中的行数\linespread{0.6}\selectfont：

Writing values in cells I left to you.
\documentclass[11pt, a4paper, notitlepage]{article}
\usepackage{array, makecell, multirow}
\usepackage{siunitx}

\begin{document}
    \begin{table}[ht]
    \centering
\setlength\tabcolsep{3pt}
\setcellgapes{3pt}
\makegapedcells
\renewcommand\multirowsetup{\centering} % <---
\begin{tabular}{|>{\linespread{0.6}\selectfont}p{8em}|c|c|c|c|}
\hline
\multirow{2}{=}{Low and high voltage levels with \SI{20}{\%} duty cycle} 
    & \multicolumn{2}{c|}{voltage readings} 
            & \multicolumn{2}{l|}{calculated values}  \tabularnewline
\cline{2-5}
    & DC    & RMS & DC & RMS    \tabularnewline
\hline
    &       &     &    &        \tabularnewline
\hline
    &       &     &    &        \tabularnewline
\hline
    &       &     &    &        \tabularnewline
\hline
\end{tabular}
    \end{table}
\end{document}

Answer 2

您可以使用 来解决您的问题，它使您能够定义在以字母为前缀的说明符（或如果您加载 则为 C ）cellspace的列中单元格顶部和底部的最小垂直间距。Ssiunitx

\documentclass[11pt, a4paper, notitlepage]{article}
\usepackage{array}
\usepackage{multirow}%
\usepackage{cellspace}
\setlength{\cellspacetoplimit}{8pt}
\setlength{\cellspacebottomlimit}{8pt}

\begin{document}

\begin{table}[h]

\centering
\begin{tabular}{| >{\centering\arraybackslash}m{8em}|Sc|Sc|Sc|Sc|}
\hline
\multirow{1.8}{=}{\centering Low and high voltage levels with 20\% duty cycle} & \multicolumn{2}{Sc|}{voltage readings} & \multicolumn{2}{Sl|}{calculated values} \tabularnewline
\cline{2-5}
    & DC & RMS & DC & RMS \tabularnewline
\hline
    & & & & \tabularnewline
\hline
    & & & & \tabularnewline
\hline
    & & & & \tabularnewline
\hline
\end{tabular}
\end{table}

\end{document}