English ⇄ Arabic Basque Bulgarian Catalan Chinese Croatian Czech Danish Dutch Estonian Finnish French German Greek Hungarian Irish Italian Japanese Latvian Lithuanian Maltese Norwegian Bokmål Polish Portuguese Romanian Russian Slovak Slovene Spanish Swedish Turkish Ukrainian

chemical oxygen demand
gen.	化学需氧量污水的
eng.geol.	耗氧量
forestr.	化学需氧量
pulp.n.paper	化学耗氧量
R&D.	化学的氧气需求 COD
tech.	COD化学需氧量
chemical oxygen demand The quantity of oxygen used in biological and non-biological oxidation of materials in water; a measure of water quality
environ.	化学需氧量 (水中生物或非生物氧化作用中消耗氧的量，是对水体质量的一种评估。)

chemical oxygen demand: 26 phrases in 3 subjects

Earth sciences	4
Technology	15
Water resources	7