... ripple bed/mattress 释义：波动床,波动褥 contact bed method 释义：接触床法 absolute bed rest 释义：绝对卧床休息 ...
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In this paper, the stable bed with Biological contact Oxidation method is used to test the Nitrifying Characteristics of city domestic wastewater. The effect caused by contact time is also tested.
利用生物接触氧化法固定床，对城市生活污水进行了硝化性能的试验研究，及接触时间对硝化性能的影响。
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