Beaulieu and colleagues measured nitrous oxide production rates from denitrification in 72 streams draining multipleland-use types across the United States.
对美国各地多种土地使用类型的72条排水溪流，比尤利和同事测量了脱氮作用造成的一氧化二氮产生率。
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The use of the drier can achieve the purposes of energy saving, multipleuse, small occupation of land, cleanness and quick drying.