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为什么这个简单的 booktabs 代码不起作用？

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为什么这个简单的 booktabs 代码不起作用？

我有以下代码：

\documentclass{article}
\usepackage{booktabs}
\begin{document}
    \begin{table}
    \begin{tabular}{SSSS}
        1& small copper ring & small aluminum ring & large aluminum ring \\ \midrule
        $T$ [s]& $0.567\pm0.014$ & $0.570\pm0.004$ &$0.558\pm0.008$ \\
        $M$ [g]& 27.5 & 8.5 & 25.0 \\ \bottomrule
    \end{tabular}
    \caption{$T$ denotes for the average period, written together with the sample standard deviation. $M$ denotes for the mass of the ring.
    \end{table}
\end{document}

然后它会抛出一些错误，例如：缺少 $ 插入。$T$ [s]& $0.567\pm0.014$ & 等。问题是什么？

答案1

您忘记了后面的右括号mass of the ring.，并且S不是预定义的列类型booktabs。这里有两种可能的方法来获得编译的表。

  1. 如果您使用例如则\begin{tabular}{cccc}没有错误。
  2. siunitx定义一个S列，但将其用于文本条目没有多大意义，因此您可能还想使用\multicolumns 作为相关标题。

例子：

\documentclass{article}
\usepackage{booktabs}
\usepackage{siunitx} %<- defines an S column type but it may not make too
% much sense to use it here for all cells.
\begin{document}
\begin{table}
    \begin{tabular}{cccc}
        1& small copper ring & small aluminum ring & large aluminum ring \\ \midrule
        $T$ [s]& $0.567\pm0.014$ & $0.570\pm0.004$ &$0.558\pm0.008$ \\
        $M$ [g]& 27.5 & 8.5 & 25.0 \\ \bottomrule
    \end{tabular}
    \caption{$T$ denotes for the average period, written together with the
    sample standard deviation. $M$ denotes for the mass of the ring.}
\end{table}

\begin{table}
    \begin{tabular}{cSSS}
        1& \multicolumn{1}{c}{small copper ring} & 
            \multicolumn{1}{c}{small aluminum ring} & 
            \multicolumn{1}{c}{large aluminum ring} \\ \midrule
        $T$ [s]& 0.567\pm0.014 & 0.570\pm0.004 &0.558\pm0.008 \\
        $M$ [g]& 27.5 & 8.5 & 25.0 \\ \bottomrule
    \end{tabular}
    \caption{$T$ denotes for the average period, written together with the
    sample standard deviation. $M$ denotes for the mass of the ring.}
\end{table}

\end{document}

在此处输入图片描述

附录： 作为Torbjørn T. 指出。，可以将第二个表的代码简化为

\begin{table}
    \begin{tabular}{cSSS}
        1& {small copper ring} & 
            {small aluminum ring} & 
            {large aluminum ring} \\ \midrule
        $T$ [s]& 0.567\pm0.014 & 0.570\pm0.004 &0.558\pm0.008 \\
        $M$ [g]& 27.5 & 8.5 & 25.0 \\ \bottomrule
    \end{tabular}
    \caption{$T$ denotes for the average period, written together with the
    sample standard deviation. $M$ denotes for the mass of the ring.}
\end{table}

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