The experiment results has shown that this is an economical filtrating unit operation with high aeration efficiency to remove Fe and Mn.
试验结果表明，地下水除铁除锰生物工艺具有经济、高效的曝气、过滤单元。
In wastewater treatment, comprehending the factors affecting the aeration efficiency of fine pore aeration system is a complex but important issue.
对污水处理中微孔曝气充氧性能影响因素的研究是一个复杂而又重要的问题。
According to the examination requirement for aeration efficiency while estimating the occupation health, the measurement of wind speed and wind pressure is educed in this paper.
文章通过在职业卫生评价时所需通风效率等参数的考核要求，引出了对风速、风压的测量；
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