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chemical oxygen demand
environ., chem.	demande chimique en oxygène
R&D.	demande chimique d'oxygène
textile	DCO
chemical oxygen demand The quantity of oxygen used in biological and non-biological oxidation of materials in water; a measure of water quality
environ.	demande chimique en oxygène

chemical oxygen demand: 3 phrases in 1 subject

Natural resourses and wildlife conservation

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