如何在文档中将长列方程分成2列

Question

日安。我在胶乳文件上有一列方程式。我打算把它分成两栏，以节省空间。下面是我使用的代码：

\begin{multicol}{2}
\textit{Chemical Initiation Reaction:}
\begin{equation*}
I\xrightarrow{K_{d}}2fR^{^{\bullet}}
\end{equation*}

\begin{equation*}
R^{^{\bullet}}+M\xrightarrow{K_{i}}R_{1}^{^{\bullet}}
\end{equation*}

\textit{Thermal Initiation Reaction:}

\begin{equation*}
3M\xrightarrow{K_{iterm}}M_{1}^{^{\bullet}}+M_{2}^{^{\bullet}}
\end{equation*}

\begin{equation*}
M_{1}^{^{\bullet}}+M\xrightarrow{4K_{P}}P_{2}^{^{\bullet}}
\end{equation*}

\begin{equation*}
M_{2}^{^{\bullet}}+M\xrightarrow{4K_{P}}P_{3}^{^{\bullet}}
\end{equation*}

\textit{Chain Propagation Reaction:}

\begin{equation*}
P_{n}^{^{\bullet}}+M\xrightarrow{K_{P}}P_{n+1}^{^{\bullet}}
\end{equation*}

\textit{Chain Transfer to Monomer Reaction:}

\begin{equation*}
P_{n}^{^{\bullet}}+M\xrightarrow{K_{trM}}P_{1}^{^{\bullet}}+ D_{n}
\end{equation*}

\textit{Chain Transfer to Solvent Reaction:}

\begin{equation*}
P_{n}^{^{\bullet}}+S\xrightarrow{K_{trS}}P_{1}^{^{\bullet}}+D_{n}
\end{equation*}

\textit{Chain Termination by Combination Reaction :}

\begin{equation*}
P_{n}^{^{\bullet}}+P_{m}^{^{\bullet}}\xrightarrow{K_{tc}}D_{n+m}
\end{equation*}

\textit{Chain Termination by Disproportionation Reaction :}

\begin{equation*}
P_{n}^{^{\bullet}}+P_{m}^{^{\bullet}}\xrightarrow{K_{td}}D_{n}+D_{m}
\end{equation*}
\end{multicol}

这就是我在使用\multicol命令之后希望在下面得到的内容。

Answer 1

我不知道您的用例是什么，但是，在当前的情况下，等式加上注释太混乱了。

分裂方程会更好。然后将注释/注释移到底部，然后将等式排列成两组。对于注释，我将创建一个简单的重格式化列表，其中包含对等式的引用。

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编辑(添加标题)

默认情况下，标准\caption{...}就足够了。但是，在这种情况下，您必须加载另一个包caption并使用它的\captionof{table}{...}。前者需要在table环境中，这里不是这样的。因此，在summy中，在代码中添加以下内容

# Somewhere after \documentclass...
\usepackage{caption}
\captionsetup[table]{position=top,skip=12pt}

然后就在\begin{tabular}...之前

# Before tabular
\captionof{table}{<Caption of your table>}

。

\documentclass{article}
\usepackage{mathtools}    % Adds improvements to amsmath
\usepackage{tabularx}     % Groups equations
\usepackage{enumitem}     % To add formatting to standard lists
\usepackage{caption}
\captionsetup[table]{position=top,skip=12pt}

\usepackage{kantlipsum}   % Only for dummy texts


\begin{document}
Start of dummy text. \kant[1][1]

\bigskip

\begingroup
\bgroup
\setlength{\abovedisplayskip}{0pt}
\setlength{\belowdisplayskip}{-\baselineskip}
\centering
\renewcommand*\tabularxcolumn[1]{>{\centering\arraybackslash}p{#1}}
\renewcommand*{\arraystretch}{1}
\captionof{table}{Caption of the table below}
\begin{tabularx}{0.85\linewidth}{@{}X|X}
  \textbf{Column 1} & \textbf{Column 2} \\
  \hline
  \begin{gather}
    \begin{gathered}
      I\xrightarrow{K_{d}}2fR^{^{\bullet}} \\
      R^{^{\bullet}}+M\xrightarrow{K_{i}}R_{1}^{^{\bullet}} \\
    \end{gathered} \label{eq:chem-init-react} \\[12pt]
    \begin{gathered}
      3M\xrightarrow{K_{iterm}}M_{1}^{^{\bullet}}+M_{2}^{^{\bullet}} \\
      M_{1}^{^{\bullet}}+M\xrightarrow{4K_{P}}P_{2}^{^{\bullet}} \\
      M_{2}^{^{\bullet}}+M\xrightarrow{4K_{P}}P_{3}^{^{\bullet}}
    \end{gathered} \label{eq:chain-transfer-react}
  \end{gather} &
                 \setlength\jot{6pt}
                 \begin{gather}
                   P_{n}^{^{\bullet}}+M\xrightarrow{K_{P}}P_{n+1}^{^{\bullet}} \label{eq:chain-combine-react} \\
                   P_{n}^{^{\bullet}}+M\xrightarrow{K_{trM}}P_{1}^{^{\bullet}}+ D_{n} \label{eq:thermal-init-react} \\
                   P_{n}^{^{\bullet}}+S\xrightarrow{K_{trS}}P_{1}^{^{\bullet}}+D_{n} \label{eq:chain-propag-react} \\
                   P_{n}^{^{\bullet}}+P_{m}^{^{\bullet}}\xrightarrow{K_{tc}}D_{n+m} \label{eq:chain-transfer-monomer-react} \\
                   P_{n}^{^{\bullet}}+P_{m}^{^{\bullet}}\xrightarrow{K_{td}}D_{n}+D_{m} \label{eq:chain-disprop-react}
                 \end{gather}
\end{tabularx}\par
\egroup
\bigskip

\noindent Annotations:
\begin{itemize}[nosep,before=\vspace{3pt}\itshape]
\item[\eqref{eq:chem-init-react}:] Chemical Initiation Reaction
\item[\eqref{eq:chain-transfer-react}:] Chain Transfer to Solvent Reaction
\item[\eqref{eq:chain-combine-react}:] Chain Termination by Combination Reaction
\item[\eqref{eq:thermal-init-react}:] Thermal Initiation Reaction
\item[\eqref{eq:chain-propag-react}:] Chain Propagation Reaction
\item[\eqref{eq:chain-transfer-monomer-react}:] Chain Transfer to Monomer Reaction
\item[\eqref{eq:chain-disprop-react}:] Chain Termination by Disproportionation Reaction.
\end{itemize}\par
\endgroup

\bigskip

End dummy text. \kant[1][2]
\end{document}