LuaLaTeX pdf：两列中的标记方程式不起作用

Question

尝试将其显示为两列带标签的方程式，但是垂直方向的列没有对齐。有人知道如何修复吗？

    \documentclass[11pt]{article}
\usepackage{graphicx} % Required for inserting images
\usepackage{natbib} % used for bibliography
\usepackage{ragged2e}
\usepackage{tabularx} %more advanced tables
\usepackage{float}
\usepackage{geometry}
\usepackage{fontspec}
\usepackage{hyphenat}
\usepackage{hyperref}
\usepackage[font={small,it}]{caption}
\usepackage{subcaption}
\usepackage{multicol}
\usepackage{amsmath}

\usepackage{titlesec}

\begin{document}

To calculate these properties the following equations were used:
    \begin{multicols}{2}
    \begin{align}
        &\text{Axial Strain:}&\epsilon_{a}&=\frac{\delta L}{L_{0}}\label{eq:AxialStrain} \\
        &\text{Volumetric Strain:}&\epsilon_{p}&=-\frac{\delta V}{V_{0}}\label{eq:VolumetricStrain}\\
        &\text{Radial Strain:}&\epsilon_{r}&=\frac{\epsilon_p-\epsilon_a}{2}\label{eq:RadialStrain}\\
        &\text{Deviator Strain:}&A&=\epsilon_a+\frac{\epsilon_p}{3}\label{eq:DeviatorStrain}
    \end{align}
    \begin{align}
        &\text{Adjusted Area:}&A&=A_0\frac{1-\epsilon_p}{1-\epsilon_a}\label{eq:AdjustedArea}\\
        &\text{Radial Stress:}&\sigma_r&=\sigma_3\label{eq:RadialStress}\\
        &\text{Deviator Stress:}&q&=\frac{P}{A}\label{eq:DeviatorStress}\\ 
        &\text{Axial Stress:}&\sigma_a&=\sigma_r+q\label{eq:AxialStress}\\
        &\text{Volumetric Stress:}&p&=\frac{\sigma_a+2\sigma_r}{3}\label{eq:VolumetricStress}
    \end{align}
    \end{multicols}


\end{document}

我一开始使用一个对齐方式，但这样只会将所有方程式放在一列中。使用对齐方式而不使用多列方式的问题在于，您只能为每一行设置一个标签，而不能为每个方程式设置一个标签

Answer 1

浮动（5）\\来自\label{eq:DeviatorStrain}

LaTeX 方程式不应以新段落开头，这里的情况就是如此，因为它们被括在 中multicols。只需\noindent在前面添加即可。

\documentclass[11pt]{article}
\usepackage{graphicx} % Required for inserting images
\usepackage{natbib} % used for bibliography
\usepackage{ragged2e}
\usepackage{tabularx} %more advanced tables
\usepackage{float}
\usepackage{geometry}
\usepackage{fontspec}
\usepackage{hyphenat}
\usepackage{hyperref}
\usepackage[font={small,it}]{caption}
\usepackage{subcaption}
\usepackage{multicol}
\usepackage{amsmath}

\usepackage{titlesec}

\begin{document}

To calculate these properties the following equations were used:
\begin{multicols}{2}
  \noindent
    \begin{align}
        &\text{Axial Strain:}&\epsilon_{a}&=\frac{\delta L}{L_{0}}\label{eq:AxialStrain} \\
        &\text{Volumetric Strain:}&\epsilon_{p}&=-\frac{\delta V}{V_{0}}\label{eq:VolumetricStrain}\\
        &\text{Radial Strain:}&\epsilon_{r}&=\frac{\epsilon_p-\epsilon_a}{2}\label{eq:RadialStrain}\\
        &\text{Deviator Strain:}&A&=\epsilon_a+\frac{\epsilon_p}{3}\label{eq:DeviatorStrain}
    \end{align}
    \begin{align}
        &\text{Adjusted Area:}&A&=A_0\frac{1-\epsilon_p}{1-\epsilon_a}\label{eq:AdjustedArea}\\
        &\text{Radial Stress:}&\sigma_r&=\sigma_3\label{eq:RadialStress}\\
        &\text{Deviator Stress:}&q&=\frac{P}{A}\label{eq:DeviatorStress}\\
        &\text{Axial Stress:}&\sigma_a&=\sigma_r+q\label{eq:AxialStress}\\
        &\text{Volumetric Stress:}&p&=\frac{\sigma_a+2\sigma_r}{3}\label{eq:VolumetricStress}
    \end{align}
    \end{multicols}

\end{document}