Information Retrieval on Internet is a new technology.
信息搜寻是网络技术的新课题。
Subject gateway, coming to meet the need of information retrieval on Internet, is one of the effective resource discovery tools on Internet.
网络学科主题门户是为适应因特网海量信息的搜索需求而出现的，是对因特网上学术信息的一种有效的发现和组织工具。
But, when search engines are used for information retrieval on Internet, the returned results are so extremely huge that users often find it difficult to seek the quite consistent useful information.
然而，在利用搜索引擎进行信息检索时，返回的搜索结果数目非常庞大，用户难以准确地寻找到自己所需的信息。
Methods for on-line retrieval and consulting of chemical information from Internet were summarized, meanwhile some outstanding chemical web sites are listed.
简要概括了互联网上化工信息检索和查询的方法，并列举了一些优秀的化工网站。
This paper discusses how to reform the work of Internet information retrieval teaching based on analysis of Internet information retrieval teaching actuality.
本文在分析网络信息检索教学现状的基础上，探讨了如何在新形势下进一步进行网络信息检索教学改革。
With the rapid growth of music information on internet, it's very hard for users to retrieval information from large scale music database.
随着音乐媒体信息的持续增长，在海量音乐数据库中检索变得越来越困难，这种趋势对音乐信息检索提出了更高的要求。
Introduces the web sites and contents of patent databases well-known at home and abroad as well as the free retrieval of patent information on the Internet.
重点介绍因特网上国内外著名的专利数据库的网址、内容和专利文献的免费检索方法。
The paper analyses the important changes of web information retrieval languages and the impact of Internet on them and discusses their system structure and terms.
本文分析了在网络平台中情报检索语言发生的重要变化，以及网络环境对检索语言的影响，最后讨论了检索语言的体系结构与词汇问题。
With the rapid development of Internet, multimedia information on the network is also rapidly increasing, so the needing of download, classification and retrieval has developed.
和灭互联网的上快收铺，网络上的长媒体信做也反在缓剧的删加，果彼己们闭于长媒体信做的上载、开类和检索的需供也便随之而来。
With the rapid development of Internet, multimedia information on the network is also rapidly increasing, so the needing of download, classification and retrieval has developed.
和灭互联网的上快收铺，网络上的长媒体信做也反在缓剧的删加，果彼己们闭于长媒体信做的上载、开类和检索的需供也便随之而来。
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