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animal husbandry eutrophication
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animal husbandry eutrophication
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农学
家畜环境
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animal husbandry eutrophication
畜牧富营养化
畜牧业生产中含氮、磷等的有机物质经土壤流入水塘、江、河、湖、海等环境,经硝化与氧化过程转变为含氮、磷的无机盐,引起藻类等生物迅速繁殖与生长,降低水体溶解氧含量,导致水质恶化,对水域环境造成危害的污染现象。
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K. O. Friedrichs (1901—1982)
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Ko-group of a ring
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ko hemp
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Kohn-Sham equation
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Kohn-Sham method
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