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美国《CA》选用世界科技期刊的速度增长较快,引用刊物也较多,已超过14000种,截止1989年6月,共选用我国期刊281种,除去两种重复(因刊名改动),实际收录279种,约占《CA》总选用期刊数的2%.在繁多的期刊中.每年,美国化学文摘社都根据引用期刊的频率排出引用频率最高的前1000名期刊目录表.根据《CA》109-110卷(1988年7月-1989年6月)统计,在这1000名表中,我国科技期刊有36种,占千名期刊数的3.6%,占选用的我国期刊总数的12.9%.
The United States “CA” selection of the world’s science and technology journals grew faster, cited more publications, has more than 14000 kinds, as of June 1989, a total of 281 kinds of journals of our country, except for two repetitions (due to the title changes), the actual About 279 species are recorded, accounting for 2% of the total number of “CA” total applications. In a large number of journals, each year, the ACS releases the top 1000 most frequently cited periodicals based on the frequency of the referenced journals. "Volume 109-110 (July 1988-June 1989) Statistics show that there are 36 scientific and technological journals in our country, accounting for 3.6% of the total number of thousands of journals and 12.9% of the total journals in our country.