一、前言在人类开发研究的新技术中,约有95%在专利文献中记载,只有5%左右在非专利文献中报道。因此检索和阅读专利文献是人类了解科学技术发展动向和水平的一条重要途径。利用各种检索工具书和检索手段找到有关主题的专利文献的专利号后,按照专利号就可提出相应的专利文献进行阅读。不同的 I. Preface About 95% of the new technologies developed by humans are described in the patent literature, and only about 5% are reported in non-patent literature. Therefore, searching and reading patent documents is an important way for people to understand the development trend and level of science and technology. After finding the patent number of the patent document related to the subject by using various search tools and search means, the corresponding patent document can be put forward according to the patent number for reading. different