查询词典 nitrogen

The concentration of nitrogen dioxide in Beijing's air was reduced by an average of 20 per cent.

北京空气中二氧化氮的含量平均降低了20%。

Diphenylamine method) and 2600mgkg-1NO3-. Based upon the results from nitrogen nutritional diagnosis.

确定了春小麦用两种方法进行氮素诊断的临界值分别为2.55（NO3-N色阶，二苯胺法）和2600mgkg-1（NO3-，反射仪法）。

Two quick test methods (diphenylamine method and nitrate test strip) for diagnosising nitrogen nutritional status in spring wheat were studled in field expriment.

通过田间试验研究了两种快速诊断方法，二苯胺法和反射仪法在春小麦氮营养诊断中的应用。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

It is shown that the content of nitrogen monoxide in the subjects' blood plasma, who are required to do Taijiquan exercise and supplement hormone, has not only been improved, but also been higher than other comparing groups.

通过测定80位受试者血浆一氧化氮含量，探讨了太极拳锻炼加激素补充综合疗法对绝经女性血浆一氧化氮含量变化的影响。

The results showed that the inorganic and organic fertilizers can increase soluble sugar and soluble protein content of leaves, and it can enhance the activities of NR, and whats more, it may adjust assimilation and output of nitrogen and stave doat, provide the valid energy for accumulation of kernel nutrition substances, at the same time, it make high-oil maize mature lively.

有机无机肥料配合施用可增加叶片可溶性糖和可溶性蛋白含量，提高叶片硝酸还原酶活性，从而增强叶片细胞渗透调节能力，调节植株对氮素同化和输出，延缓衰老，为籽粒营养物质的积累提供了有效能量，也保证了高油玉米活杆成熟青贮加工的要求。

Similar as traditional activated sludge system, when the water temperature was below 4℃, sludge bacteria went into dominancy phase and metabolism stopped. All the removal of nitrogen and COD was due to membrane blockage.

与传统活性污泥系统类似，在水温低于4℃的情况下，MBR反应器内的微生物进入休眠状态，无法对水中污染物质进行分解代谢，对于氨氮和COD的去除均由膜组件的物理截留造成。

Finally, the problems in the study of nitrogen doped TiO2 photocatalysts and the future developing trends are presented.

文章最后指出了氮掺杂TiO2催化剂研究中有待解决的问题及今后的发展方向。

Objective To study the community of denitrifying bacteria and nitrate-nitrogen removal in downflow fixed-bed bioreactor.

目的研究下流式固定床反应器的脱氮效果及反硝化细菌群落结构。

The highest nitrogen concentration was in the downflow water,followed by in the stagnant area,and the lowest was in the main upstream riverway.

鄱阳湖湖体氮含量以下游最高，滞留区次之，上游主河道最低，TP含量呈相反的趋势变化。

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