When multiple formulas in latex share a sequence number

LaTeX in , When a sequence number contains multiple formulas , You need this code

\documentclass{article}
\usepackage{ctex}

\usepackage{amsmath}

\begin{document}

\begin{equation}
\begin{aligned}
    x_{1}=x_{0}+2(\frac{S_{L}w}{S_{L}-S_{R}}-\frac{w}{2}) \sin \frac{\alpha }{2}\cos( \theta -\frac{\alpha }{2})\\
    y_{1}=y_{0}+2(\frac{S_{L}w}{S_{L}-S_{R}}-\frac{w}{2}) \sin \frac{ w }{2}\cos( \theta -\frac{\alpha }{2})
\end{aligned}
\end{equation}
  
\end{document}

The code will change to ：