A three-line table is a table with only top, bottom and column lines. The first two are thick lines, and the column lines are thin lines.

Experimental measurement and calculation data are the core contents of scientific papers. As one of the main forms of data expression, tables are widely used because of their clear function of quantitatively expressing quantitative information. The three-line table is concise in form, clear in function and easy to read, so it is recommended to be used in scientific papers. Three-line tables usually have only three rows, namely, top row, bottom row and column row.