High grade provides, the high efficiency network information resource retrieval is, also is the network information retrieval researcher's diligent orientation, which the network user longed for.
提供高质量、高效率的网络信息资源检索是网络用户所渴望的,也是网络信息检索研究者努力的方向。
Deep Web; Network information resource; information retrieval; U. S. a.
深网;网络信息资源;信息检索;美国。
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