biochemical oxygen demand
柯林斯词典
1. N a measure of the organic pollution of water: the amount of oxygen, in mg per litre of water, absorbed by a sample kept at 20°C for five days 生化需氧量 ( abbr: BOD)
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1. N a measure of the organic pollution of water: the amount of oxygen, in mg per litre of water, absorbed by a sample kept at 20°C for five days 生化需氧量 ( abbr: BOD)