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Research and development
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化学的氧气
需
求
COD
demanda química de oxígeno
氧气
需
求
demanda de oxígeno
氧气
需
求, 氮的-NOD
demanda nitrogenada del oxígeno
生物
需
氧量
demanda bioquímica de oxígeno
生物
需
氧量
DBO
生物化学的氧气
需
求
BOD
demanda bioquímica de oxígeno
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