英文首页的论文标题过长，如何三行显示

[xinleiyu]

英文首页的论文标题过长，如何三行显示

[xinleiyu]

应该修改buptgraduatethesis.cls里的这段~
但没看懂这个逻辑...

\begin{minipage}[t]{\textwidth}%题目
      \centering
      \xiaoer[1.5]
      \vspace{0.5cm}
      \settowidth{\bupt@titlewidth}{\bupt@meta@etitle}
      \setlength{\extrarowheight}{0pt}
      \setlength{\arrayrulewidth}{0.5bp}
      \begin{tabular}{@{}p{42bp}@{\bupt@title@esep}p{95mm}@{}}
        \bupt@label@etitle & %
        \parbox[t]{95mm}{%
          \centering%
          \renewcommand\titlebreak{\\\global\let\bupt@long@title\@empty}
          \rule[-5bp]{95mm}{0.5bp}\\[-27bp]
          \bupt@meta@etitle%
        }%
        \\%
        \ifx\bupt@long@title\@empty
          \cline{2-2}
        \else
          \ifdim\bupt@titlewidth>95mm
          \cline{2-2}
          \fi
        \fi
      \end{tabular}
    \end{minipage}\\[1.3cm]

[xinleiyu]

渣渣逻辑，期待改进；
标题为2行时候，最后一个下划线实际上是两条下划线完全重合

\begin{minipage}[t]{\textwidth}%题目
      \centering
      \xiaoer[1.5]
      \vspace{0.5cm}
      \settowidth{\bupt@titlewidth}{\bupt@meta@etitle}
      \setlength{\extrarowheight}{0pt}
      \setlength{\arrayrulewidth}{0.5bp}
      \begin{tabular}{r p{110mm}}
        \bupt@label@etitle~\bupt@title@esep & %
        \parbox[t]{110mm}{%
          \centering%
          \renewcommand\titlebreak{\\\global\let\bupt@long@etitle\@empty}
          \ifdim\bupt@titlewidth<110mm
            \bupt@meta@etitle
            \ifx \bupt@long@etitle\@empty
              \\[-54bp]%
              \rule[-5bp]{110mm}{0.5bp}\\
              \rule[-5bp]{110mm}{0.5bp}
            \else
              \\[-27bp]%
              \rule[-5bp]{110mm}{0.5bp}
            \fi
          \else
            \rule[-5bp]{110mm}{0.5bp}\\%
            \rule[-5bp]{110mm}{0.5bp}\\[-54bp]%
            \bupt@meta@etitle\\[-27bp]%
            \rule[-5bp]{110mm}{0.5bp}
          \fi
        }%
        \\%
      \end{tabular}
    \end{minipage}\\[1.5cm]