The Network Database of five types domestic Special Literature retrieval is introduced in this article, it can provide an accurate and convenient retrieval path for readers and researchers.
文章主要介绍了国内可以检索的五类特种文献网络数据库，为广大读者和科研工作者利用特种文献提供更准确更便捷的检索途径。
E-book held the advantages that beyond comparison of traditional books, such as prompt dissemination, multi-media, convenient retrieval, small storage space and large resources sharing space.
电子图书在传播快捷、形式多样、检索方便、节省存储空间、资源共享空间大等方面有着传统纸质图书无法比拟的优势。
Retrieval aerosols optical thickness over Beijing and its surrounding area from MODIS data aims at providing a new, economical and convenient measurement for urban air pollution monitoring.
本论文利用MODIS资料遥感北京及其周边地区气溶胶光学厚度是为了提供监测城市大气污染新的、经济而便捷的观测手段。
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