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for subject
Earth sciences
containing
索性
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in specified order only
Chinese
English
变动性环境探索研究
mobility environmental research study
可靠性信息检索系统
reliability information retrieval system
地区性宇宙空间搜索雷达
geographic aerospace search radar
探
索性
发展必要条件
exploratory development requirement
综合性科技研究信息检索系统
retrieval system for general information on scientific and technological research
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