如何在不改变边距的情况下将大表格放入单页中？

Question

我在下面的代码中展示了两个表格，一个表格的页边距发生了变化，另一个表格的页边距没有变化。根据规则，我不能稍微更改页边距，而且这个表格只有一页，而且这个表格在一个页面中放不下。请给我建议一种方法（无论如何）让这个表格在一个页面中放得下。

\documentclass{llncs}
\usepackage{longtable}
\usepackage[table]{xcolor}
\usepackage{xcolor,colortbl}
\newenvironment{changemargin}[1]{
  \begin{list}{}{
    \setlength{\voffset}{#1}
  }
  \item[]}{\end{list}}
\usepackage{array}
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}
\setcounter{secnumdepth}{3}
\usepackage{enumerate}
\usepackage[T1]{fontenc}
\usepackage[all,cmtip]{xy}
\usepackage{tikz-cd}
\usepackage{enumitem}
\usepackage{changepage}
\usepackage{mathtools}
\usepackage{amsmath}
 \numberwithin{equation}{subsection}
\DeclarePairedDelimiter\floor{\lfloor}{\rfloor}
\usepackage{amsfonts}
\usepackage[normalem]{ulem}
\usepackage{amstext}
\usepackage{array}

\begin{document}

\title{topic}

\titlerunning{Hamiltonian Mechanics}
\author{Author}
\authorrunning{at}
\institute{Insti\\
\email{email} \hspace{3mm} \email{email2}}
\maketitle        

\begin{abstract}
abc 
\keywords{xyz}
\end{abstract}

\section{Introduction}

\begin{changemargin}{-1.5cm}
\setlength{\arrayrulewidth}{.6mm}
\setlength{\tabcolsep}{10pt}
\renewcommand{\arraystretch}{1.5}

\begin{table}
{\rowcolors{2}{gray!0!black!0}{gray!0!white!0}

\begin{adjustwidth}{-3.25cm}{} 
\begin{tabular}{ |p{8.5cm}|p{8.5cm}|  }
\hline
\hspace{2.5cm} \textbf{\uline{Fffffff Fffff Fffff}} \vspace{2mm}& \hspace{2.5cm}\textbf{\uline{Nnnnnn Nnnnn Nnnnn}} \\
\hline \hline

\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 

\end{itemize}

& 

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 

\end{itemize}

\\

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline




\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 


\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 
\end{itemize}


& 

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 


\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 
\end{itemize}


\\

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{flushleft}

\begin{displaymath}
\hspace{-0.70cm}\xymatrixcolsep{1pc}
\xymatrix{
  & &  \mathbf{m[x][x]} \ar[dl] \ar[dr] & \\ 
   &  \mathbf{m[x][x]/\textit{m(x,x)}}  \ar[dr] & & \mathbf{m[x][x]/\textit{m(m,x)}} \ar[dl]  \\
  & & \mathbf{m[x]/\varphi(x)\cong x(x\textsuperscript{x})}   & &
}
\end{displaymath}
\end{flushleft}

 &

\begin{center}
\begin{displaymath}
\xymatrixcolsep{4.5pc}
\hspace{-2.25cm} \xymatrix{
  & &  \mathbf{\mathbb{K}[x]} \ar[dl] \ar[dr] & \\ 
   &  \mathbf{\mathbb{K}[x]/\textit{m(x)} =  \mathbb{K}[a]}  \ar[dr] & & \mathbf{\mathbb{K}[x]} \ar[dl]  \\
  & & \mathbf{\mathbb{K}/k\mathbb{K}}  & &
}
%\end{adjustwidth}
\end{displaymath}

 % \end{flushright} 

 \end{center} 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

  \\


\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\end{itemize}

&

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\end{itemize}

\\  

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss}} \\
 \hline

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 
\end{itemize}

&

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 
\end{itemize}

\\

\hline  
\end{tabular}
\caption{ FFF and NNN }
 \end{adjustwidth}
}
\end{table}
\end{changemargin}



%\begin{changemargin}{-1.5cm}


\setlength{\arrayrulewidth}{.6mm}
\setlength{\tabcolsep}{10pt}
\renewcommand{\arraystretch}{1.5}

\begin{table}



{\rowcolors{2}{gray!0!black!0}{gray!0!white!0}
%\begin{adjustheight}{2}{}
%\begin{adjustwidth}{-3.25cm}{} 
\begin{tabular}{ |p{8.5cm}|p{8.5cm}|  }
\hline

\hspace{2.5cm} \textbf{\uline{Functon Fffff Fffff}} \vspace{2mm}& \hspace{2.5cm}\textbf{\uline{Nnnnnn Nnnnn Nnnnn}} \\
\hline \hline

\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 

\end{itemize}

& 

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 

\end{itemize}

\\

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline




\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 


\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 
\end{itemize}


& 

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 


\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj 
asmlj asmlj 
\end{itemize}


\\

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{flushleft}

\begin{displaymath}
\hspace{-0.70cm}\xymatrixcolsep{1pc}
\xymatrix{
  & &  \mathbf{m[x][x]} \ar[dl] \ar[dr] & \\ 
   &  \mathbf{m[x][x]/\textit{m(x,x)}}  \ar[dr] & & \mathbf{m[x][x]/\textit{m(m,x)}} \ar[dl]  \\
  & & \mathbf{m[x]/\varphi(x)\cong x(x\textsuperscript{x})}   & &
}
\end{displaymath}
\end{flushleft}

 &

\begin{center}
\begin{displaymath}
\xymatrixcolsep{4.5pc}
\hspace{-2.25cm} \xymatrix{
  & &  \mathbf{\mathbb{K}[x]} \ar[dl] \ar[dr] & \\ 
   &  \mathbf{\mathbb{K}[x]/\textit{m(x)} =  \mathbb{K}[a]}  \ar[dr] & & \mathbf{\mathbb{K}[x]} \ar[dl]  \\
  & & \mathbf{\mathbb{K}/k\mathbb{K}}  & &
}
%\end{adjustwidth}
\end{displaymath}

 % \end{flushright} 

 \end{center} 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

  \\


\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\end{itemize}

&

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 

\end{itemize}

\\  

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss}} \\
 \hline

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 
\end{itemize}

&

\begin{itemize}[font=$\bullet$\scshape\bfseries]
\item[] aaaa asas asas asas asas asas asas asas asas asas asas asas 
asas asas asas asas asas 
\end{itemize}

\\

\hline  
\end{tabular}
\caption{ FFF and NNN }
% \end{adjustwidth}
}
\end{table}

\end{document}

谢谢！

Answer 1

这是一个解决方案，使用enumitem和nccmath作为其\medmath命令来获得中等大小的公式：它允许减小交换图的大小：

\documentclass{llncs}
\usepackage{longtable}
\usepackage[table]{xcolor}
\newenvironment{changemargin}[1]{
  \begin{list}{}{
    \setlength{\voffset}{#1}
  }
  \item[]}{\end{list}}
\usepackage{array}
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}
\setcounter{secnumdepth}{3}
\usepackage{enumitem}
\usepackage[T1]{fontenc}
\usepackage[all,cmtip]{xy}
\usepackage{tikz-cd}
\usepackage{enumitem}
\usepackage{changepage}
\usepackage{mathtools}
 \numberwithin{equation}{subsection}
\DeclarePairedDelimiter\floor{\lfloor}{\rfloor}
\usepackage{amsfonts}
\usepackage[normalem]{ulem}
\usepackage{array, tabularx, nccmath}
\usepackage{showframe}
\renewcommand\ShowFrameLinethickness{0.3pt}

\begin{document}

\title{topic}
\titlerunning{Hamiltonian Mechanics}
\author{Author}
\authorrunning{at}
\institute{Insti\\
\email{email} \hspace{3mm} \email{email2}}
\maketitle
\begin{abstract}
abc
\keywords{xyz}
\end{abstract}
\section{Introduction}
\setlength{\arrayrulewidth}{.6mm}
\setlength{\tabcolsep}{10pt}
\renewcommand{\arraystretch}{1.333}
\setlist[itemize, 1]{label=$ \bullet $, wide=0pt, leftmargin=*, topsep=0pt, before=\vspace*{-1.8ex}, after=\vspace*{-\baselineskip}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{table}
{\rowcolors{2}{gray!0!black!0}{gray!0!white!0}
\setlength\tabcolsep{4pt}
\begin{tabularx}{\linewidth}{|X|X|}
\hline
\centering \textbf{\uline{Fffffff Fffff Fffff}} \vspace{2mm}& {\centering\textbf{\uline{Nnnnnn Nnnnn Nnnnn}}} \\
\hline \hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
&
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
\\

\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
\begin{itemize}
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
&
\begin{itemize}
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
\\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
$ \xymatrixcolsep{-1.5pc}
 \medmath{\xymatrix{
  & \mathbf{m[x][x]} \ar[dl] \ar[dr] & \\
    \mathbf{m[x][x]/\mathit{m(x,x)}} \ar[dr] & & \mathbf{m[x][x]/\mathit{m(m,x)}} \ar[dl] \\
   & \mathbf{m[x]/\varphi(x)\cong x(x\textsuperscript{x})} & &
}} $
 &
\hspace*{-1.5pc}
$ \xymatrixcolsep{1pc}%
\medmath{\xymatrix{
  & & \mathbf{\mathbb{K}[x]} \ar[dl] \ar[dr] & \\
   & \mathbf{\mathbb{K}[x]/\mathit{m(x)} \mathrlap{=\mathbb{K}[a]}} \ar[dr] &\hspace*{5pc} &\mathbf{\mathbb{K}[x]} \ar[dl]\quad \\
  & & \mathbf{\mathbb{K}/k\mathbb{K}} & &
}} $
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  \\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
&
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
\\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss}} \\
 \hline
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
&
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
\\
\hline
\end{tabularx}
\caption{\strut FFF and NNN }
}
\end{table}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\setlength{\arrayrulewidth}{.6mm}
\setlength{\tabcolsep}{10pt}
\renewcommand{\arraystretch}{1.5}
\begin{table}
{\rowcolors{2}{gray!0!black!0}{gray!0!white!0}
\begin{tabularx}{\linewidth}{ |X|X|}
\hline
\centering \textbf{\uline{Function Field Sieve}} \vspace{2mm}& {\centering \textbf{\uline{Number Field Sieve}}} \\
\hline \hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
&
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
\\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
\begin{itemize}
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
&

\begin{itemize}
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj asmlj
asmlj asmlj
\end{itemize}
\\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
$ \xymatrixcolsep{-1.5pc}
\medmath{\xymatrix{
 & & \mathbf{m[x][x]} \ar[dl] \ar[dr] & \\
 & \mathbf{m[x][x]/\mathit{m(x,x)}} \ar[dr] & & \mathbf{m[x][x]/\mathit{m(m,x)}} \ar[dl] \\
 & & \mathbf{m[x]/\varphi(x)\cong x(x\textsuperscript{x})} & &
}} $
 & \hspace*{-1.5pc}
$ \xymatrixcolsep{1pc}
 \medmath{\xymatrix{
 & & \mathbf{\mathbb{K}[x]} \ar[dl] \ar[dr] & \\
 & \mathbf{\mathbb{K}[x]/\mathit{m(x)}\mathrlap{ = \mathbb{K}[a]}} \ar[dr] & \hspace*{5pc} & \mathbf{\mathbb{K}[x]} \ar[dl] \quad\\
 & & \mathbf{\mathbb{K}/k\mathbb{K}} & &
}} $

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss} } \\
 \hline
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
&
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
\\
\hline
\rowcolor{gray!90!black!50}
\multicolumn{2}{|c|}{ \textbf{Aaaaaaaaa Kssssssss}} \\
 \hline
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
&
\begin{itemize}
\item aaaa asas asas asas asas asas asas asas asas asas asas asas
asas asas asas asas asas
\end{itemize}
\\
\hline
\end{tabularx}
\caption{\strut FFF and NNN }
}
\end{table}

\end{document}