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富营养化
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富营养化
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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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富营养化
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agency by agreement
agency by estoppel
agency costs
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agency for the arts
Agency for the State Granaries
Agency for Tibetan Buddhist Affairs
Agency of Pollution Treatment Facility Operation and Management
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Agenda 21
Agenda of China Sea in 21th Century
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agenda-setting function of news: thinking what
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A General History of Chinese Literature
A General History of the Theory of Ancient Chinese Drama: From the Pre-Qin Era to the Modern Time
A General Introduction to Chinese Operas
A General Introduction to Operatic Genres of Shanxi Province
A General Study of Ming Variety Drama
A General Survey of Agriculture
A General Survey of Chinese Quyi
A General Survey of Ci Poetry in the Song Dynasty
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