For example, a reduction in organic carbon and nutrients, including phosphorus or nitrogen, as may occur in intensively farmed areas, DE creases the fertility of soils.
例如，过度耕种的土地可能发生有机碳和营养的减少，包括磷或氮，降低了土壤的肥力，在农作物密集的地区往往是这样。
The final reduction product of nitrate nitrogen is ammonia nitrogen.
硝酸盐氮的最终还原产物为氨氮。
Under mild ambient conditions gallium phosphide nanoparticles were employed to carry out the reduction of nitrogen.
在温和条件下，利用磷化镓纳米粒子进行了氮的还原反应，即氮氨转化。
B reaction, inorganic nitrogen sources utilization and citrate utilization, the results were positive. Nitrate reduction experiment presented positive largely.
反应、无机N源利用、柠檬酸盐利用呈阳性，硝酸盐还原试验大多呈阳性；
Due to low ap-parent activation energy for reduction of nitrate nitrogen by NZVI, the reduction reaction can be per-formed at normal temperature.
纳米铁还原硝酸盐氮的表观活化能较低，还原反应在常温下即很容易进行；
Cord blood separation and volume reduction is first needed to meet THD practical bank requirement for the high expense of liquid nitrogen preservation equipment.
同时由于脐血库液氮保存设备费用昂贵，需要预先分离脐血单个核细胞以减少样本冻存体积，以满足建库实际需求。
Ammonia selective catalytic reduction (SCR) of nitrogen oxide is the only industrialized flue gas DeNOx technology.
氨选择性催化还原(SCR)氮氧化物是唯一工业化的烟气脱硝技术。
The invention relates to a 'catalyst used for ammonia selective catalytic reduction of nitrogen oxides to nitrogen gas and a preparation method thereof', and belongs to the catalyst technical filed.
本发明涉及“氨选择性催化还原氮氧化物成氮气的催化剂及其制备方法”，属于催化剂技术领域。
So far, there is no high-efficiency and low-energy consumption, pollution-free waste water treatment technology with sludge reduction and nitrogen and phosphorus removal.
迄今为止，尚无一种集污泥减量与同时脱氮除磷为一体的高效低能耗、无污染的废水处理技术。
When exhaust flow flows through a three-way catalyst, redundant hydrogen and nitrogen oxides in waste gas are subjected to oxidation-reduction reaction to further reduce discharge.
排气流过三元催化器时，废气中多余的氢气和氮氧化物发生氧化还原反应，进一步降低排放。
When exhaust flow flows through a three-way catalyst, redundant hydrogen and nitrogen oxides in waste gas are subjected to oxidation-reduction reaction to further reduce discharge.
排气流过三元催化器时，废气中多余的氢气和氮氧化物发生氧化还原反应，进一步降低排放。
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