The COD, ammonia and total nitrogen (TN) removal efficiency were studied in the paper at low DO concentration in a pilot-scale A/O nitrogen removal plant treating domestic wastewater.
应用A/O中试装置处理实际生活污水，研究了低DO浓度下系统对有机物、氨氮和总氮的去除效果。
Experts say potatoes raise blood-glucose concentration quickly, as do snack chips, white bread, low-fiber breakfast cereals, and breakfast bars.
专家说，如果用马铃薯做薯片零食、白面包、低纤维早餐谷物和早餐能力棒，它可以迅速提升人体血糖浓度。
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