... 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 ...
双语例句
1
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.