Writing SCI papers needs to insert a table with variables and text descriptions, and alignment settings should be considered. The first step is to adopt the original text:

\begin{table}{thb}

\begin{center}

\begin{tabular}{c l l}

"Directory"

\end{tabular}

\end{center}

\end{table}

In this way, the contents in the table cannot wrap automatically, and the contents appear in one line. If there are large paragraphs of text, the overall width of the table will exceed the limit, so you need to set the width of each column.

Therefore, in the parameters after \begin{tabular}, you can set the alignment and width of each column. After setting the width, the contents of the table will wrap automatically, but there will be vertical alignment problems at this time. The default alignment in the table is up. If vertical and horizontal alignment is required, you need to set parameters. Column width, horizontal alignment and vertical alignment are set by adding braces after \begin{tabular} and {m {0.34 in}.

At present, the problem has been solved, but "

In addition, after setting the column width, the edited row spacing is very short and ugly, so a row spacing setting is added:

\ renew command { \ array stretch } { 1.5 }

Add after \begin{center} and before \begin{tabular}. Increase the line spacing between tables, which is more beautiful.