我想创建这个文本方程对齐，但我不知道如何

Question

我有这张图片，我想在 latex 中重新创建它。方程式必须左对齐，方程式旁边的文本必须右对齐，还必须包含方程式的编号。我试过 \begin{subequations} 、 \begin{arrays} 、 \begin{align} ，但我无法获得对齐和编号。

以下是我想要重新创建的图片

以下是我没有对齐的代码

"Maxwell's equations" are named for James Clark Maxwell and are as follow:

\begin{equation}
  \overrightarrow{\nabla} \cdot \overrightarrow{E}\quad =\quad \frac{\rho}{\epsilon_0}  \text{{Gauss's Law}}
\end{equation}

\begin{equation}
   \overrightarrow{\nabla} \cdot \overrightarrow{B}\quad  = \quad 0  \text{{Gauss's Law for Magnetism}}
\end{equation}

\begin{equation}
   \overrightarrow{\nabla} \times \overrightarrow{E}\quad  = \quad - \frac{\partial \overrightarrow{B} }{\partial t} \text {{Faraday's Law of Induction}}
\end{equation}   

\begin{equation}
   \overrightarrow{\nabla} \times \overrightarrow{B} \quad = \quad \frac{\mu_0}{\epsilon_0}  \text{{Ampere's Circuital Law}}
\end{equation}

Answer 1

这可以通过使用标准align环境来实现：

\documentclass{article}

\usepackage{amsmath}

\begin{document}

``Maxwell's equations'' are named for James Clark Maxwell and are as follow:
\begin{align}
   \vec{\nabla} \cdot \vec{E} &= \frac{\rho}{\epsilon_0} && 
    \text{Gauss's Law} \\
   \vec{\nabla} \cdot \vec{B} &= 0                       && 
    \text{Gauss's Law for Magnetism} \\
  \vec{\nabla} \times \vec{E} &= -\frac{\partial \vec{B}}{\partial t} && 
    \text{Faraday's Law of Induction} \\
  \vec{\nabla} \times \vec{B} &= \mu_0 \biggl( \epsilon_0 \frac{\partial \vec{E}}{\partial t} + \vec{J} \biggr) && 
    \text{Ampere's Circuital Law}
\end{align}

\end{document}