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富营养化
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富营养化
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eutrophication
富营养化
由于人类活动,氮、磷等营养物质大量进入湖泊、水库、河口、海湾等缓流水体,引起藻类和其他浮游生物过量生长和水体生态平衡的改变,导致水体溶解氧下降、水质恶化、景观破坏的现象。
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eutrophication
富营养化
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political structure of society
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political thought of ancient Chinese peasant war leadership
political thought of bourgeois democratic revolutionary in modern China
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political thought of Chao Cuo
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political thought of Confucianism
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political thought of Dong Zhongshu
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