第一次接触ctex，使用ctex做表格。

作为一个小白，真的是从ctex的界面操作开始学起。

ctex代码如下：

\documentclass[letterpaper,12pt]{article}

\usepackage[margin=1in]{geometry}

\usepackage{verbatim}

\usepackage{amsmath}

\usepackage{supertabular}

\usepackage{array}

\usepackage{multirow}

\usepackage{booktabs}

\usepackage{threeparttable}

\begin{document}

\renewcommand{\arraystretch}{1.5} 

\begin{table}[tp]

  \centering

  \fontsize{7}{9}\selectfont  

  \begin{threeparttable}

  \caption{$SiS_2$ and $Si_2S$}

  \label{tab:performance_comparison}

    \begin{tabular}{ccccccc}

    \toprule

    \multicolumn{4}{c}{$SiS_2$}&\multicolumn{3}{c}{$Si_2S$}\cr

    \cmidrule(lr){2-4} \cmidrule(lr){5-7}

    &$J'_{Ka',Kc'}$$\rightarrow$$J_{Ka,Kc}$&Frequnency (MHz)&$E_u (K)$&$J'_{Ka',Kc'}$$\rightarrow$$J_{Ka,Kc}$&Frequnency (MHz)&$E_u (K)$\cr

    \midrule

    &$4_{0,4}$$\rightarrow$$3_{1,3}$&32756.2703&2.62&$4_{0,4}$$\rightarrow$$3_{1,3}$&31754.1622&2.54\cr

    &$4_{1,4}$$\rightarrow$$3_{0,3}$&32793.1882&2.62&$4_{1,4}$$\rightarrow$$3_{0,3}$&31866.6612&2.54\cr

    &$3_{2,2}$$\rightarrow$$2_{1,1}$&34549.2147&1.86&$3_{2,2}$$\rightarrow$$2_{1,1}$&34377.4766&1.78\cr

    &$4_{1,3}$$\rightarrow$$3_{2,2}$&39446.3936&3.51&$4_{1,3}$$\rightarrow$$3_{2,2}$&37515.9772&3.43\cr

    &$5_{0,5}$$\rightarrow$$4_{1,4}$&40050.4392&4.19&$5_{0,5}$$\rightarrow$$4_{1,4}$&38862.3314&4.07\cr

    &$5_{1,5}$$\rightarrow$$4_{0,4}$&40054.6584&4.19&$5_{1,5}$$\rightarrow$$4_{0,4}$&38880.9153&4.07\cr

    &$4_{2,3}$$\rightarrow$$3_{1,2}$&40789.1543&3.46&$4_{2,3}$$\rightarrow$$3_{1,2}$&40279.6240&3.32\cr

    &$3_{3,1}$$\rightarrow$$2_{2,0}$&43464.6229&2.12&$3_{3,1}$$\rightarrow$$2_{2,0}$&43722.3899&2.08\cr

    &$3_{3,0}$$\rightarrow$$2_{2,1}$&47173.2232&2.01&$5_{1,4}$$\rightarrow$$4_{2,3}$&45630.1270&5.26\cr

    &$5_{1,4}$$\rightarrow$$4_{2,3}$&47257.4869&5.42&$6_{0,6}$$\rightarrow$$5_{1,5}$&45933.4432&5.93\cr

    &$6_{0,6}$$\rightarrow$$5_{1,5}$&47331.1264&6.12&$6_{1,6}$$\rightarrow$$5_{0,5}$&45936.2282&5.93\cr

    &$6_{1,6}$$\rightarrow$$5_{0,5}$&47331.5636&6.12&$3_{3,0}$$\rightarrow$$2_{2,1}$&46400.1598&2.00\cr

    &$5_{2,4}$$\rightarrow$$4_{1,3}$&47516.3714&5.41&$5_{2,4}$$\rightarrow$$4_{1,3}$&46403.6849&5.23\cr

    &$4_{3,2}$$\rightarrow$$3_{2,1}$&50864.0771&3.90&$5_{2,3}$$\rightarrow$$4_{3,2}$&48973.5235&6.19\cr

    \bottomrule

    \end{tabular}

    \end{threeparttable}

\end{table}

\end{document}

一点点心得

记录下来，免得下次使用的时候又忘了

·\usepackage{XXX}   %使用包，运行出错时，差什么包就加什么包；

·\begin{document}   %文档开始，有begin，后面一定会对应一个end；

·\renewcommand{\arraystretch}{1.5}  %这是控制行高的；

·\fontsize{7}{9}\selectfont   %表格长宽；

·$Si_2S$   %Si₂S，下标使用_,且要用$$框起来，如果下标是多个数字或者字母，需要用{}框起来；

·\rightarrow   %向右箭头，使用时用$$框起来；