Latex 中文章节

\usepackage{titlesec}
\renewcommand{\chaptername}{第\CJKnumber{\thechapter}章}
\newcommand{\sectionname}{节}
\renewcommand{\figurename}{图}
\renewcommand{\tablename}{表}
\renewcommand{\bibname}{参考文献}
\renewcommand{\contentsname}{目~录}
\renewcommand{\listfigurename}{图~目~录}
\renewcommand{\listtablename}{表~目~录}
\renewcommand{\indexname}{索~引}
\renewcommand{\abstractname}{\Large{摘~要}}
\newcommand{\keywords}[1]{\\ \\ \textbf{关~键~词}：#1}
\titleformat{\chapter}[block]{\center\Large\bf}{\chaptername}{20pt}{}
\titleformat{\section}[block]{\large\bf}{\thesection}{10pt}{}