The results showed that to maintain environment in which high and low DO occur alternately is the key to achieving short-cut nitrification.
试验结果表明，保持高、低溶解氧交替的环境是实现短程硝化的关键；
Study was made on the conditions in which short-cut nitrification was achieved and on the variation of sludge characteristics at low DO in SBR and CSTR.
研究了低溶解氧(DO)下，在SBR和CSTR反应器内实现短程硝化的条件及其污泥性状的变化。
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。
Educational choice in India: why are the levels of education so low? Do parents care about education? Can they afford it? What is education good for?
印度教育机会：为什麽教育水准如此之低？家长重视教育吗？家长能够负担起教育费用吗？教育带来的好处是什麽？
Gastric acid is low, do not eat plum, lemon, hawthorn and other organic acid containing more fruits.
胃酸较低的人，不要吃李子、山楂、柠檬等含有机酸较多的水果。
Objective To investigate the feasibility of low-do se single-slice helical ct in pulmonary ct scan and evaluate the clinical application.
目的探讨单排螺旋CT行肺低剂量扫描的技术可行性及其应用价值。
Objective To investigate the feasibility of low-do se single-slice helical ct in pulmonary ct scan and evaluate the clinical application.
目的探讨单排螺旋CT行肺低剂量扫描的技术可行性及其应用价值。
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