Latex表格插入

 \begin{table}[h]
 \centering
 \caption{Traffic flows description}
 \begin{tabular}{|c||c|c|c|c|} \hline
 Traffic flow & C & P & T & D\\ \hline
 $\tau_1$ &  &  & & \\ \hline
 $\tau_2$ &  &  & & \\ \hline
 $\tau_3$ &  &  & & \\ \hline
 $\tau_4$ &  &  & & \\ \hline
 \end{tabular}
 \end{table}