单词	biochemical oxygen demand
释义	biochemical oxygen demand noun : the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (such as water polluted with sewage) Example Sentences Recent Examples on the Web As a result of the initiative, preliminary testing there has shown a 400-percent improvement in biochemical oxygen demand, one of many water quality indicators, the release said. Robert Rhoden, NOLA.com, 31 Oct. 2017 Word History First Known Use 1914, in the meaning defined above Medical Definition biochemical oxygen demand noun biochemical oxygen de·​mand -di-ˌmand  : the oxygen used in meeting the metabolic needs of aerobic microorganisms in water rich in organic matter (as water polluted with sewage) called also biological oxygen demand, oxygen demand
随便看	causticly caustics Causus cautel cautelous cautelously cauterants cauteries cauterisation cauterisations cauterise cauterised cauterises cauterising cauterisms cauterization cauterizations cauterize cauterized cauterizes cauterizing cauters cautery cautio cautioi

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