查询词典 nitrogen

Vegetation restoration also resulted in the changes of soil physicochemistry properties including the significant increase in contents of organic matter, total nitrogen, available potassium, fine sand, very fine sand and clay, and the decrease in available nitrogen, phosphorus.

植被的恢复使土壤理化性质发生了变化，与封育前相比土壤中有机质、全N、速效K以及细砂、特别细砂和粘粒含量显著增加；速效N、速效P降低。

The basic nitrogen and total nitrogen in the fractions were determined by non-aqueous potentiometric titration and chemiluminescence.

含氮化合物的存在会引起石油加工中催化剂中毒和油品自身的氧化沉积，有些含氮化合物还会致癌[2]。

To study this refrigerator below liquid nitrogen temperature, a low temperature rotary valve pulse tube refrigerator with liquid nitrogen precooler was built.

为了研究这种制冷机在液氮温区的性能，笔者搭建了带液氮预冷器的低温旋转阀式脉冲管制冷机并进行了测试。

The results showed that:1The quality of fennel seeds in Gansu was the best;2Inner mongolia F1 Hybrid had higher yield and rate of dry matter than other varieties;3The content of Vc, organic acid, proteinic nitrogen and full nitrogen in fennel plant of Gansu was the highest;4 Fennels in Hebei and Shanxi were early maturity variety, and fennels in Jilin, Gansu and Tuoxian of Inner mongolia were mid-maturity variety, while fennels in Inner mongolia F1 Hybrid, Xinjiang and Liaoning were late maturity variety.

研究结果表明：1甘肃品种的种子质量最好，发芽率高；2内蒙F1最好，真叶多，单株生物产量高，干物质率高；3营养成分以甘肃品种相对最好，抗坏血酸、有机酸、蛋白氮、全氮含量都相对较高；4在韶关栽培河北和山西品种属早熟品种，吉林、甘肃和内蒙托县品种属中熟品种，内蒙F1、新疆和辽宁品种属晚熟品种。

Twenty-eight prototrophic revertants of the tryptophan auxotrophs were obtained through spotaneous back mutation from colonies grown on synthetic medium plates or nodules of plants. Most of the revertants have resumed the nodulation abilities and enhanced nitrogen fixation activities as evidenced by darker green color, higher dry weight and more nitrogen contents in shoot than those of the wild type strain 8-1-4A did in pot experiments. However, noodulation abilities decreased to some extent and no significant differences were found in the mass of nodules compared with the parent strain.

通过自发回复突变，从培养平板和根瘤中分离到28个色氨酸原养回复突变型菌株，对其中25株进行植物盆栽试验证明其中24株菌的结瘤功能得到了恢复，而且固氮酶活性普遍比出发菌有所提高，其中41％达到极显著水平，18％达到显著水平，植株地上部分干重及含氮量也有不同程度的提高，唯有根瘤数比出发菌有所降低，其中23％降低达极显著水平，11％降低达显著水平。

By comparison among concentration of nitrogen compounds, relative contents of pryyolic N-H shielded carbazoles and parameters of C21-/C22+、Pr/nC17 , the results show that slight biodegradation has little effects on the relative contents and distribution of pyrrolic nitrogen compounds, but has certain effect on its concentration.

根据2类原油中含氮化合物浓度、屏蔽型含氮化合物的相对含量与反晕原油生物降解的地化参数C21-/C22+、Pr/nC17等指标的对比研究，发现生物降解作用对该区原油中含氮化合物的相对含量及其分布影响不显，运移作用仍然是造成含氮化合物分馏的主要因素。

In complex 2, the manganese ion is six-coordinated by two oxygen atoms and two nitrogen atoms from a quadridentate ligand Lb. as well as one oxygen atom from DMF and one cyanide nitrogen atom from [Fe3] (superscript -) in axial positions.

化合物2中，[Fe3]通过其中的1个氰基与桥联，其中Mn离子为六配位，分别和四齿配体Lb的2个氧原子和2个氮原子、DMF的1个氧原子及[Fe3]中的氰基氮原子配位。

The result of the test showed that the fed quantity of TiO2 was 1.25 mg／mL,the photocatalytic degradation of the pyridine was in conformity with the first order kinetic equation,the feeding of 0.2％H2O2 obviously increased the degradation rate of the pyridine and the nitrogen in the pyridine converted into ammonia nitrogen;the pearlite-loaded TiO2 had the same catalytic effect as that of powered TiO2 and was easy to recover and reutilize.

以钛酸四丁酯水解法制备TiO2，采用溶胶一凝胶法在膨胀珍珠岩上负载TiO2，在UV-TiO2体系中对水中吡啶进行光催化降解，结果表明：TiO2加入量为1.25mg／mL，吡啶的光催化降解符合一级动力学方程，加入0.2％H2O2可明显加快吡啶的降解速度，吡啶中氮转化为氨氮，珍珠岩负载型TiO2与粉末TiO2具有相同的催化效能，且便于回收和重复使用。

The nitrate reductase activity,chlorophyll concentration and nitrogen content of tobacco leaf and total absorption area of tobacco rhizotaxy were significantly or extremely sign ificantly correlated with nitrogen concentration.

结果表明，不同基因型烟草对氮素营养的响应有明显差异，其硝酸盐还原酶活性、叶绿素含量、根系总吸收面积、氮含量均与氮浓度呈显著或极显著相关。

Coarse protein content of root continuously increased from 11 26% under CK treatment to 30 21% under N 5(900 kg·hm -2 ), showing that Rumex K 1 could deposit and regulate absorbed nitrogen and appeared resistent to nitrogen fertilization.

根的粗蛋白的含量由对照的1 1 2 6%增加到N5( 90 0kg·hm- 2 )的 3 0 2 1 %，表明酸模的根具有一定的储存和调控氮的能力，这可能是作物具有较强的耐氮性原因之一。

Go to your desktop and right click in a blank space.

请到您的桌面，然后右击一个空白。

Tara appears in Buddhism, Jainism, and particularly, Tibetan Lamaism, as a complex array of manifestations: goddess of ascetism and mysticism, mother creator, protectress of all humans as they cross the sea of life.

度母出现在佛教，耆那教里面，尤其是西藏的喇嘛教，作为一系列的陈列阵容；神秘的女神，创世之母，人类横过生命之海洋的女性保护者。