【摘要】 ２．３网络数据库的联机检索目前许多联机检索系统纷纷推出简单直观的Ｗｅｂ检索界面来吸引用户。２．３．ＩＴｈｅＤＩＡＭＸｉｏ你规ｉｏｎＴｈｅＤＩＡＬｆｆｉｂｏｔｉｏｎ，是当今世界最大的联机情报检索系统。Ｏａｌｏｇ目前拥有４５０个数据库，有３亿篇以上的记录...更多还原

【Abstract】 By means of the interface of Web in Internet, we can enjoy the rich resources without having to go to any special information agencies and thus saving the limitation of time, locations and the trouble brought about by the complicated instructions. The article introduces the basic service functions of Internet, the information retrieval instrument and methods on WWW, and the united retrieval of thefour webs.更多还原