If infusing is only made without aeration , the effect is often poor .
如只浸泡不曝气,效果往往不佳。
Environment management and fisheries officers deployed aeration equipment to boost oxygen levels to save the remaining fish in the 55-acre lake
环境管理人员和渔业官员给这块占地55英亩的湖泊部署曝气设备,提高湖水含氧量以挽救剩下的鱼。
The experimental results indicated that the more the compartment number of aeration tank , the more powerful the driving force of biological reaction , and the higher the treat-ment efficiency and the limiting organic load .