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physical geography of China
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physical geography of China
Encyclopedia
理学
中国自然地理
释
physical geography of China
中国自然地理
研究中国自然地理环境系统、全国及不同等级地区的自然地理结构、发生发展过程和区域分异规律,从而充分认识和系统掌握中国自然地理环境的基本特征,自然条件和自然资源的优势和不足,探索合理利用与开发自然资源、保育和优化自然环境的方向和途径。
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closed range theorem
closed ray
closed region
closed reserve system
closed resonator
closed Riemann surface
closed ring
closed scheme
closed season
closed semicircle
closed semigroup
closed semisphere
closed sentential formula
closed sequence
closed set
closed set basis
closed-shelf book selling
closed shell
closed shell ion
closed-shell ion
closed shell molecule
closed simplex
closed solid sphere
closed solution
closed space
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