根据国家标准,科技论文必须附有摘要。这是交流和检索的需要。摘要的作用就是介绍文章的主要内容,吸引读者,从而达到信息交流的目的;论文发表后,文摘期刊社对其进行整理,使之成为二次文献。摘要可按其内容划分为三类。一是报道性摘要,又称资料性摘要或情报性摘要。是以摘录论文 According to national standards, scientific papers must be accompanied by an abstract. This is the need for communication and retrieval. Abstract’s role is to introduce the main contents of the article, to attract readers, so as to achieve the purpose of information exchange; after the publication of the paper, Abstracts Journals Agency to organize them, making it a secondary literature. The summary can be divided into three categories according to their content. First, a summary of the report, also known as information summary or intelligence summary. Excerpts of papers