答案1
像这样的事情是否足够并且符合您的要求?
\documentclass[a4paper,12pt]{article}
\usepackage{amsmath,amssymb}
\usepackage{newtxtext} % optional package for text font in Times New Roman
\begin{document}
Where,
\begin{equation*}
\begin{split}
u_{i} &= \text{Horizontal displacement}\\
v_{i} & = \text{Vertical displacement}\\
\varphi_{i} & = \text{Rotation Angle}
\end{split}
\end{equation*}
\end{document}
\documentclass[a4paper,12pt]{article}
\usepackage{amsmath,amssymb}
\usepackage{newtxtext} % optional package for text font in Times New Roman
\usepackage{newtxmath} % optional package for math-font Times New Roman
\begin{document}
Where,
\begin{equation*}
\begin{split}
u_{i} &= \text{Horizontal displacement}\\
v_{i} & = \text{Vertical displacement}\\
\varphi_{i} & = \text{Rotation Angle}
\end{split}
\end{equation*}
\end{document}
答案2
这是一个采用array
环境的解决方案。
\documentclass{article}
\usepackage{array} % for \newcolumntype macro
\newcolumntype{L}{>{$}l<{$}} % (cancel) automatic math mode
\begin{document}
\noindent
Where,\\
\hspace*{1.5cm}%
$\begin{array}{@{} r @{{}={}} L @{}} % 1st col. in math mode, 2nd col. in text mode
u_{i} & Horizontal displacement \\
v_{\mathrm{i}} & Vertical displacement\\ % why '\mathrm{i}' ??
\varphi_{i} & Rotation Angle
\end{array}$
\end{document}