The nitrification rate is obviously increased as the temperature increases from 13 to 20In dissolved oxygen (DO) single factor experiment, the biofilter operates under three DO levels of 0.3mg/L, Img/L and 2mg/L, and ascertain the optimum DO is 1.0mg/L.是什么意思_The nitrification rate is obviously increased as the temperature increases from 13 to 20In dissolved oxygen (DO) single factor experiment, the biofilter operates under three DO levels of 0.3mg/L, Img/L and 2mg/L, and ascertain the optimum DO is 1.0mg/L.在线翻译_英语_读音_用法_例句