介绍了常用的国内外航空科技文献数据库；
Typical aero scientific and technical document database at home and abroad are introduced.
科技文献的分类是科技文献数据库的重要组成部分。
The classification of scientific document is an important component of scientific document database.
如何实现高效检索，更好地为广大用户提供科技文献信息服务，是科技文献数据库建设中一个非常重要的环节。
It is a very important part to provide an effective retrieval interface in the Scientific and Technological Literature Database development.
通过对CNKI中文期刊数据库文献统计分析，发现有关国家科技计划的农业科技的文献产出较少，这反映农业科研成果扩散渠道不畅。
Analyzed CNKI, this is less relevant literatures output of the national agriculture science and technology program, which shows approach to the agriculture research production, is scarcity.
他们希望能够把它用于累积在公共数据库里，科学文献的巨大语料库(一种科学文献至少就有五千万的科技资料)，而不仅仅是菜谱。
They hope to use it not on recipe books but on the vast corpus of scientific literature (by one tally at least 50m scientific papers) that has piled up in public databases.
通过对CNKI中文期刊数据库文献统计分析，发现有关国家科技计划的农业科技的文献产出较少，这反映农业科研成果扩散渠道不畅。
Analyzed CNKI, this is less relevant literatures output of the national agriculture science and technology program, which shows approach to the agriculture...
通过对CNKI中文期刊数据库文献统计分析，发现有关国家科技计划的农业科技的文献产出较少，这反映农业科研成果扩散渠道不畅。
Analyzed CNKI, this is less relevant literatures output of the national agriculture science and technology program, which shows approach to the agriculture...
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