目前，科技编辑界都推荐使用三线表。然而由于表格内容比较复杂、多样，单靠这３条线是不够的，解决问题的途径是添加辅助线，这时仍然称为三线表［１］。高校学报规范明确提出：建议使用三线表，必要时可添加辅助线［２］。上述文献都只说明“必要”时添加辅助线，而没有确切 At present, science and technology editors are recommended to use three-wire table. However, due to the complicated and diverse forms, it is not enough to rely on these three lines. The way to solve the problem is to add supplementary lines, which are still called the three-line table [1]. College journals specification clearly put forward: It is recommended to use the three-wire table, if necessary, add auxiliary line [2]. The above documents only indicate that “auxiliary” is added when necessary, but not definite