论文部分内容阅读
美国化学会(ACS)的化学文摘服务部(Chemical Abstracts Service,简称(CAS)在1989年收集了155个国家的在学术杂志上发表的论文和专论,国际学术会议论文及各种技术报告,共摘录了397158篇化学文摘。这些摘要若按国别分类,美国最多,占27.8%,苏联次之,我国居第七位(3.7%),而10年前(1979年)我国仅占1%。若按语种分类,英语最多,竟占3/4,汉语和德语并列第四。
The Chemical Abstracts Service (CAS) of the American Chemical Society (ACS) collected papers and monographs from 155 countries published in academic journals in 1989, international academic conference papers and various technical reports, A total of 397,158 chemical abstracts were extracted from these abstracts, with the United States accounting for 27.8% of the total, followed by the Soviet Union, followed by China (3.7%), while China accounted for only 1% of the 10 years ago (1979) If classified by language, most English accounts for 3/4, with Chinese and German tied for fourth.