The total nitrogen(TN) is removed by 44.7% after stage A,but the ammonia nitrogen content rises up after stage B,so the TN removal rate drops to about 35.7%.是什么意思_The total nitrogen(TN) is removed by 44.7% after stage A,but the ammonia nitrogen content rises up after stage B,so the TN removal rate drops to about 35.7%.在线翻译_英语_读音_用法_例句