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。
Biochemical oxygen demand - BOD: a measure of the amount of pollution by organic substances in water.
五天生化需氧量(简写为BOD5):标准的生化需氧量试验。其方法是把一份溶液的样品在摄氏20度下培养五天。
Biochemical oxygen demand over five days - BOD5: The standard biochemical oxygen demand test whereby a sample of the liquid is incubated at 20 degrees C for five days.
用上述两种方法测定标准样品、各种污水的生化需氧量进行差异性比较。
The two methods used for measuring standard samples and all sewage biochemical oxygen demand.
用上述两种方法测定标准样品、各种污水的生化需氧量进行差异性比较。
The two methods used for measuring standard samples and all sewage biochemical oxygen demand.
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