content of additional carbon
content of additional carbon
附加碳含量
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Under the conditions of this experiment, the increase of additional organic carbon content is not in advantage of the removal of nitrogen in waste water irrigation system.
在本文特定作物和土壤条件下，增加灌溉原污水中的有机碳含量将不利于污灌系统对氮素的去除。
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