在线制作表格网址:http://www.tablesgenerator.com/#
前三个可以控制横线长短
%注意黑色部分的标记
\begin{table}
\centering
\caption{Optimal results for two different load cases}
\label{Tab:03}
\begin{tabular}{ccccc}
\hline
% after \\: \hline or \cline{col1-col2} \cline{col3-col4} ...
Cases & Component shapes & Initial layout & Optimized layout & Objective function\\
\hline
\multirow{3}{*}{Case 1} &rectellipse & \tabincell{c}{(50, 30, $0$) \\ (70, 30, $0$)}
& \tabincell{c}{(35.145, 24.633, 2.0298) \\ (85.182, 24.542, -0.7411)}
& \multirow{3}{*}{67.359} \\
\cline{2-4}
& calabash-shaped & \tabincell{c}{(10, 30, $\pi /2$) \\ (110, 30, $\pi /2$)}
& \tabincell{c}{(8.635, 28.556, 0.836) \\ (110.299, 28.578, 2.283)}
& \\
\cline{1-5}
\multirow{3}{*}{Case 2} &rectellipse & \tabincell{c}{(50, 30, $0$) \\ (70, 30, $0$)}
& \tabincell{c}{(36.049, 35.603, 0.506) \\ (83.621, 35.087, 0.885)}
& \multirow{3}{*}{199.781} \\
\cline{2-4}
& calabash-shaped & \tabincell{c}{(10, 30, $\pi /2$) \\ (110, 30, $\pi /2$)}
& \tabincell{c}{(8.469, 31.537, 0.788)$^a$ \\ (112.882, 30.057, 1.864)}
& \\
\cline{1-5}
\hline
\end{tabular}
\footnotesize{$^a$ The smallest spatial unit is county}\\
\end{table}
% Please add the following required packages to your document preamble:
% \usepackage{multirow}
\begin{table*}[]
\scriptsize
\centering
\caption{Optimized results of the circular arch for different slenderness and opening angles}
\label{Tab03}
\begin{tabular}{cccccccccc}
\toprule
\multirow{2}{*}{Opening angle} & \multicolumn{3}{c}{$R/r=10$} & \multicolumn{3}{c}{$R/r=25$} & \multicolumn{3}{c}{$R/r=50$} \\
\cmidrule(r){2-4} \cmidrule(r){5-7} \cmidrule(r){8-10}
& $\omega_{1} (\%)$ & $r_{{\rm min}}/r_0$ & $r_{{\rm max}}/r_0$
& $\omega_{1} (\%)$ & $r_{{\rm min}}/r_0$ & $r_{{\rm max}}/r_0$
& $\omega_{1} (\%)$ & $r_{{\rm min}}/r_0$ & $r_{{\rm max}}/r_0$ \\
\midrule
$\varphi=60^{\circ} $ &3.920 & 0.793 & 1.355 & 5.243 & 0.558 & 1.122 & 6.694 & 0.503 & 1.133 \\
$\varphi=90^{\circ} $ &4.061 & 0.660 & 1.106 & 7.242 & 0.500 & 1.136 & 8.060 & 0.501 & 1.140 \\
$\varphi=120^{\circ} $ &6.480 & 0.558 & 1.127 & 9.011 & 0.500 & 1.145 & 9.535 & 0.500 & 1.147 \\
$\varphi=150^{\circ} $ &8.756 & 0.500 & 1.142 & 10.763 & 0.500 & 1.153 & 11.126 & 0.500 & 1.155 \\
\bottomrule
\end{tabular}
\end{table*}
\begin{table}[]
\begin{tabular}{cccccccc}
\hline
\multicolumn{1}{l}{} & \multicolumn{7}{c}{观察者} \\
\cline{2-8}
\multicolumn{1}{c}{方法} & \multicolumn{1}{c}{1} & \multicolumn{1}{c}{2} & \multicolumn{1}{c}{3} & \multicolumn{1}{c}{4} & \multicolumn{1}{c}{5} & \multicolumn{1}{c}{6} & \multicolumn{1}{l}{平均准确率} \\
\hline
\multicolumn{1}{c}{SG-Net} & \multicolumn{1}{c}{81.0\%} & \multicolumn{1}{c}{85.0\%} & \multicolumn{1}{c}{81.2\%} & \multicolumn{1}{c}{88.0\%} & 90.0\% & 84.7\% & 84.9\% \\
\multicolumn{1}{c}{PS} & \multicolumn{1}{c}{79.3\%} & \multicolumn{1}{c}{83.3\%} & \multicolumn{1}{c}{79.7\%} & \multicolumn{1}{c}{86.0\%} & 87.0\% & 82.3\% & 82.9\% \\
Pb & 76.7\% & 81.3\% & 77.3\% & 83.3\% & 85.0\% & 80.0\% & 80.6\% \\
CC & 80.1\% & 83.4\% & 80.3\% & 85.2\% & 88.5\% & 82.1\% & 83.3\%\\
\hline
\end{tabular}
\end{table}