Subject indexing is the key step in creating subject retrieval system of water saving agriculture literature database.
主题标引是建立“节水农业文献数据库”主题检索系统的关键工作。
The research of the integrated technical system for water saving agriculture in Hebei Province and its developed results are described.
介绍了河北省节水农业综合技术体系研究与开发的成果。
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