论文章节标题需要双倍行距（在 myreport.cls 中）

Question

我正在使用 myreport.cls 撰写博士论文。格式要求章节标题为双倍行距。我该如何实现？以下是使用的章节定义：

% this one creates the chapter heading and makes the chapter title to have number
% it is called by \chapter{...}
\def\@makechapterhead#1{%
  \vspace*{10\p@}%
  {\parindent \z@ \raggedright \normalfont
    \ifnum \c@secnumdepth >\m@ne
        {\centering \normalsize \MakeUppercase{\@chapapp} \space \thechapter   % this uppercase command makes the word ``chapter'' be uppercase at the beginning of each chapter
        \par \nobreak
        \vskip 14\p@    % space between 'CHAPTER x' and the actual title
        }
    \fi
    {\centering
    \interlinepenalty\@M
    \normalsize \MakeUppercase{#1} \par \nobreak
    \vskip 8\p@     % space between CHAPTER TITLE and the material that starts immediately
    }
  }}

根据上述定义，章节标题如下所示：

但我希望它看起来像：

先谢谢您的帮助。

Answer 1

我在这里使用书籍类作为示例。我相信它应该适用于任何类设置。添加\renewcommand{\baselinestretch}{2}到章节标题定义中，以便章节标题有双倍空间。

\documentclass{book}
\usepackage{lipsum}
\makeatletter
\def\@makechapterhead#1{%
  \vspace*{10\p@}%
  {\parindent \z@ \raggedright \normalfont
    \ifnum \c@secnumdepth >\m@ne
        {\centering \normalsize \MakeUppercase{\@chapapp} \space \thechapter   % this uppercase command makes the word ``chapter'' be uppercase at the beginning of each chapter
        \par \nobreak
        \vskip 14\p@    % space between 'CHAPTER x' and the actual title
        }
    \fi
    {\centering\renewcommand{\baselinestretch}{2}
    \interlinepenalty\@M
    \normalsize \MakeUppercase{#1} \par \nobreak
    \vskip 8\p@     % space between CHAPTER TITLE and the material that starts immediately
    }
  }}
\makeatother
\begin{document}
\chapter{abcd efgh ijkl mnop qrst uvwx yz abcd efgh ijkl mnop qrst uvwx yz abcd efgh ijkl mnop qrst uvwx yz}
\lipsum[1]
\end{document}