GB/T15834-1995《标点符号用法》规定:“顿号的形式为(、),句子内部并列词语之间的停顿,用顿号。”也就是说,顿号表示句子内部最小的停顿,常用在并列的词或词组之间。在科技论文中,常常出现以下误用的情况:1联合词组不同层次的词语之间误用顿号示例:陆地长输管道距离长、涉及面广、承载易燃、易爆或有毒介质。分析:“距离长、涉及面广”是一个层次,它和“承载易燃、 GB / T15834-1995 ”punctuation usage“ provides: ”The comma in the form of (,), pause between the words within the sentence, use a comma. “ In other words, the comma means the smallest pause within the sentence , Commonly used in parallel words or phrases. In scientific papers, the following misuse often occurs: 1 Misunderstanding between phrases at different levels in a syndication phrase Example: A long-distance land transport pipeline has a long distance and involves a large area carrying flammable, explosive or poisonous media. Analysis: ”long distance, involving a wide range of“ is a level, it and ”bearing flammable,