Different DO concentration in aerobic tank 2.8, 1.7, 0.8, 0.5mg/L was obtained by controlling the aeration rates, which was 0.9, 0.6, 0.4, 0.3m3/h, respectively.是什么意思_Different DO concentration in aerobic tank 2.8, 1.7, 0.8, 0.5mg/L was obtained by controlling the aeration rates, which was 0.9, 0.6, 0.4, 0.3m3/h, respectively.在线翻译_英语_读音_用法_例句