nitrification liquid reflux ratio
...硝化液回流比；脱氮除磷[gap=1810]Key words: suspended aerobic biofilm A2O process; carbon and nitrogen ratio; nitrification liquid reflux ratio; nitrogen and phosphorus removal..
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nitrification liquid reflux ratio
硝化液回流比
以上为机器翻译结果，长、整句建议使用 人工翻译 。