Biochemical oxygen demand - BOD: a measure of the amount of pollution by organic substances in water.
生化物需氧量(简写为BOD)：一种衡量有机物在水中的污染量的标准。
They are commonly measured in units of biochemical oxygen demand (BOD), or the amount of oxygen needed to decompose them.
常常使用生化需氧量，即有机物分解所需的氧这个单位进行测量。
Biochemical oxygen demand, BOD is necessary for water quality evaluation. It is an important index in measuring organic materials pollution.
生物化学需氧量bod是水质评价的必测项目，是衡量有机物对水质污染的重要质量指标。
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