The average removal rate of COD_Mn, SS and the colour of the wastewater is 77.8%, 75.9% and 82.6% in the purple soil, and 96.0%, 86.5% and 97.0% in the red soil.是什么意思_The average removal rate of COD_Mn, SS and the colour of the wastewater is 77.8%, 75.9% and 82.6% in the purple soil, and 96.0%, 86.5% and 97.0% in the red soil.在线翻译_英语_读音_用法_例句