Nitrogen and Phosphorus are restricted severely to prevent the water eutrophication .Biological nutrient removal (BNR) is an important water pollution control technology.是什么意思_Nitrogen and Phosphorus are restricted severely to prevent the water eutrophication .Biological nutrient removal (BNR) is an important water pollution control technology.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句