介绍德温特世界专利索引数据库具有高附加值的英文标题和摘要,规范化的专利权人代码索引体系,涉及全部技术领域的德温特分类体系及手工代码检索途径,入藏登记号索引及优先权信息等特色功能,极大地提高了检索效率。对该数据库常用特色功能进行系统分析,以期为研究人员使用该数据库提供帮助。 Introducing the Derwent World Patent Index Database with high value-added English title and abstract, standardized patent code indexing system covering all technical areas of Derwent taxonomy and manual code retrieval approaches, accession number and priority index Right information and other special features, greatly improving the search efficiency. Systematic analysis of the commonly used features of the database to help researchers use the database.