查询词典 nitrogen-free

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 main response to the region in accordance with the "aeration, idle, precipitation, drainage" cycle of operation procedures, so that sewage in the "aerobic - hypoxia," repeatedly in the carbon to complete, from Nitrogen, and the "aerobic - anaerobic" repeatedly in the completion of phosphorus.

在主反应区内依照"曝气、闲置、沉淀、排水"程序周期运行，使污水在"好氧-缺氧"的反复中完成去碳、脱氮，和在"好氧-厌氧"的反复中完成除磷。

So the variety of L21 andLainong9217 should be planted in dry land of high yield,and the variety ofLainong8834 and YD27 in dry land of middle yield,and gaining high yieldand high efficiency.2 The researches on the flag leaf and root system senescence after anthesisand yield were studied in dry land wheat of high yield,the activity of super-oxide dismatase and catalase、and the soluble protein content、Cytokinincontent in wheat flag leaf and root system after anthesisand Cytokinincontent in grain decreased slowly,and the content ofmalondiadehydeand the Abscisic Acidcontent in wheat flagleaf and root system and the Abscisic Acidcontent in grain increasedslowly,meanwhile keep higher root vigor and the root vigor decreased slow-ly,the result would be benefit to delay the senescence and gain high yield.3 The effects of soil thickness on the senescence of flag leaf and root sys-tem、nitrogen distribution and utilization and water consumption law andyield in dry land wheat had been studied in soil column and field.

通过大田条件下旱地高产小麦耗水规律及产量变化的研究表明，4个品种耗水量、产量、水分生产率、籽粒产量中来自花后光合器官输送的比例及综合效益评判结果均以鲁麦21和莱农9217为高，而莱农8834和烟D27则与此相反，因而在旱地高产麦田应以种植鲁麦21和莱农9217为主，中产麦田以莱农8834和烟D27为主，以获得高产高效。2在旱地高产大田对鲁麦21与烟D27两品种花后旗叶、根系衰老及产量变化进行了研究，认为花后旗叶与根系SOD、CAT活性、可溶性蛋白质含量、i-PAs含量及籽粒iPAs含量降低缓慢，MDA含量、ABA含量及籽粒ABA含量增加缓慢，同时保持较高的根系活力且下降缓慢，有利于延缓衰老，形成高产。3土层厚度对旱地小麦花后衰老、氮素分配利用及产量的影响进行了研究，随土层厚度加深，根系活力、根系与旗叶SOD、CAT活性及可溶性蛋白质含量增加，MDA含量减少，土层愈薄，其根系与旗叶衰老愈快。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。