科学技术发展的连续性与继承性,决定了任何一项科学研究都要在前人已经取得的成就的基础上进行。为了继承和借鉴已有的科技知识和成果,摸清科学技术发展的水平和动向,避免重复劳动和避免侵犯他人的专利权,以及 The continuity and succession of the development of science and technology determine that any scientific research must be conducted on the basis of the achievements already made by its predecessors. In order to inherit and learn from the existing scientific and technological knowledge and achievements, find out the level and trends of science and technology development, avoid duplication of work and avoid infringing the patent rights of others and