氮的

The materiel balance of Nitrogen and Phosphorus in the static examination shows: In eliminating of the nitrogen, Ipomea aquatica absorbing and the artificial medium nitrify contributing up to 31.8% and 38.7%; in eliminating the phosphorus, the contribution that Ipomea aquatica absorbing is 26.7%.

静态运行条件下的氮磷物料衡算显示：在总氮的去除中，空心菜吸收及人工介质反硝化的贡献分别达到了31.8%、38.7%；在总磷的去除中，空心菜吸收的贡献为26.7%。

Activities can cause a very large release of DIN by virtue of excretion, burrowing, bioturbation and sediment resuspension. Developed cave in sediment and continual turnover of sediment by crab can improve an organic matter remineralization and ammonification, consequently reworking the DIN vertical profile in sediment.

蟹类活动造成的洞穴结构及对沉积物的翻动混合能增加沉积物中的氧气含量，促进沉积物中有机氮的矿化和NH(上标+下标 4)的释放，造成无机氮在沉积物中的剖面分布特征发生较大变化。

The machine applies Faraday magnetic conductivity principle for the first time, utilizes the difference between oxygen of air andnitrogen, paramagnetism of oxygen and diamagnetism of nitrogen principles and adopted high-performance rare-earth permanent-magnet material, which creates 18 proprietary technologies that take polyoxier and helimagnetizer as core.

该机首次应用法拉弟导磁性原理，利用空气中氧、氮磁性之差，即氧的顺磁性和氮的抗磁性原理。采用高性能稀土永磁材料，创造了以"聚氧器"和"螺旋磁化器"为核心的16项专有技术。聚氧器利用氧的顺磁性，采用高梯度强磁场富聚空气中的氧，同时设有与离心叶轮同步高速旋转的双向扫射磁场，对富聚的氧予以充分的激活。

The main mechanism of nitrogen in wetland systems is the action of microorganisms,while the removal efficiency will increase with the protraction of HRTin wetland,and also the action has a close relationship with the alternant changes of DO formed by the undee flowing.

湿地系统除氮的主要机制在于微生物的作用，随停留时间的延长湿地系统对氮的去除效率增加，且该作用与波形水流状态所形成的溶解氧交替变化有关。

Long running performance showed that due to the membrane interception,the nitrobacter is enriched in reactor in the interest of improving the nitrification rate;the maximum ammonia nitrogen loading can be 0.19 kg/(m3·d) with effluent ammonia nitrogen＜1 mg/L (removal rate 99%).

采用浸没式膜生物反应器处理焦化废水的试验结果表明：膜的截留作用可使硝化菌在反应器内富集而有利于提高系统的硝化能力，其去除氨氮的最高负荷为0.19kg/(m3·d)，出水氨氮＜1mg/L(去除率为99%)；泥龄长可能使微生物的代谢产物或其他大分子物质积累，从而

In this paper, the mechanism of nitrogen cycle was explored in the Yangtze River estuary. The results show that δ15N of SPM was in a wide range of 0.6‰ and 8.2‰, varying with seasons and geographic regions. The temporal and spatial variation reflected different influences of terrigenous inputs and nitrogen biogeochemical processing.

研究发现：该海域悬浮颗粒有机物的稳定氮同位素组成(δ15Np)分布范围较宽，在0.6‰～8.2‰之间，具有明显的时空分布特点，反映了不同程度的陆源输入和氮的生物地球化学过程的影响。

On the basis of long-term experiment, changes in soil organic C, N and dynamics of soil NO〓-N of cropping systems were investigated in gully area of the Loess Plateau by means of analysis of the 15-year soil samples, crop yield in following crop systems: 1 continuous winter wheat with unmanured , nitrogen, organic manure , phosphorus and organic manure , nitrogen and phosphorus , nitrogen, phosphorus and organic manure , 2 continuous alfalfa, 3 pea-winter wheat rotation, winter wheat-sainfoin rotation, and 4 bare fallow. A model was developed according to the organic C dynamics, and was tested by the long-term experiment.

本文以中国科学院长武试验站的长期试验（始于1985年）为依托，通过对典型处理8-15年的土壤养分、作物产量以及同期降水量等的系统分析，揭示了黄土旱塬区不同种植体系中土壤有机碳、氮的演变规律；阐明了长期施肥条件下土壤硝态氮的迁移积累机理；提出了目前水肥条件下黄土旱塬区冬小麦生产潜力及其提高途径。

Nested ANOVA test showed the variance of GCPP mainly occurred among sites rather than within periphyton. Diatoms increased with the GCPP. There is a significant positive relation between the dissolved inorganic nitrogen in the water column and GCPP of periphyton.

GCPP的时空变化与底栖微藻在附生藻类生物量中所占比例和水体中的无机氮浓度有非常显著的正相关性，初步推测大鹏湾的GCPP可能是受到水体中氮的限制而有GCPP之时空变化。

Layers from 0 to 120cm and the effects of different factors on NO3(superscript -)-N accumulation The results showed the more nitrogen fertilizers applied, the more NO3(superscript -)-N accumulated in different soil layer; nitrogen fertilizers applied with organic fertilizer or sod culture could reduce the accumulation of NO3(superscript -)-N.

结果表明，氮肥的大量施用会造成硝态氮在土壤中的累积，而配施有机肥、地表生草、合理的种植密度均可减少硝态氮的累积量。

The advantage of this method is that high concentration ammonia solution can be recovered and the ...

此方法的特点是MHP吸附氨氮生成的磷酸铵镁经热分解后，可同时回收高浓度氨水及再生MHP，实现氨氮的回收和MHP的循环使用。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷