Excerpta

This study was designed to make a comparative evaluation of the performance of Index Medicus, Excerpta Medica, Biological Abstracts and Science Citation Index covering medical literature with the method of bibliometrics.

本文利用文献计量学方法，对世界权威科技文献情报源INDEX MEDICUS，ExcerptaMedica，BiologicalAbstracts和Science Citation Index收录医学文献的情况进行了比较研究。

Excerpta from a product operation manual I translated before.

以前翻译的一本产品说明书中摘节的一段。