论文部分内容阅读
科技论文的关键词是从其题名、层次标题和正文中选出来的,能反映论文主题概念的词或词组,是表达文献主题概念的自然语言词汇,是科技论文的文献检索标识。
The key words of scientific papers are words or phrases that can be selected from the title, level titles and texts, and reflect the thematic concepts of the essay. It is a natural language glossary that expresses the subject concepts and is the document retrieval identification of scientific papers.