氮

In order to determine the load-bearing capacity, the bearing steel GCr15 was treated by ferritic and composite nitrocarburizing techniques.

为考察氮碳共渗层的承载能力，对GCr15轴承钢进行了铁素体氮碳共渗及其与氧化+抛光+氧化相结合的复合氮碳共渗工艺，首次对铝质材料实施了氮碳共渗处理，研究了表面处理层的摩擦学特性。

The results showed:(1)Nitrogen addition changed the soil physical and chemical properties, enhancing the content of NO3—- N available resources in the soil, increasing the plants height and cover, reducing the vegetation light penetration. With increasing of N addition, both the species richness and the diversity decrease sharply (P 0.001).(2)N addition increased the aboveground biomass significantly (P 0.05). With increasing of N addition, the aboveground biomass increased first then decreased, and the grasses biomass increased while the forbs and legumes biomass decreased.(3)There was a significant linear positive relationship between species richness and vegetation light penetration (P 0.05), and also between aboveground biomass and soil NO3—- N content (P 0.05). The relationship between aboveground biomass and species richness was negative upon enhanced N supply.

结果表明：（1）氮素添加提高了土壤中NO3—- N等可利用资源的含量，增加了植物群落植被的盖度，减小了植被的透光率，随着施氮量的增加群落中物种丰富度显著降低（P 0.001）；（2）氮素添加显著改变了植物群落地上生产力（P 0.05），随着施氮量的增加地上生产力呈现先增加后降低的变化趋势，各功能群中禾草生物量显著增加，而杂草和豆科生物量随施氮量增加逐渐减少；（3）物种多样性与植被透光率呈线性正相关（P 0.05）；地上生产力与土壤NO3—- N含量呈线性正相关（P 0.05）；随着施氮量的增加物种丰富度与生产力之间呈负相关关系。

There is no longer an azido bridge between the two copper atoms, which are 5.123 (4)︿ appart. The macrocycle is in a chair-type conformation.

每个配位多面体由大环穴醚配体提供三个氮原子，叠氮离子提供一个氮原子，两个Cu离子之间不存在叠氮桥，间距为5.12︿。

For example, significant correlation in Zunyi prefecture was found between smoking total scores and total nitrogen, nitrogen to nicotine ratio and nicotine, and between offensive odor and total nitrogen and chloride.

在省级尺度，烟叶化学成分与烟叶品质的关系更为复杂，需用更多的化学成分（碳水化合物、含氮化合物及矿质养分）才能综合反映烟叶的品质，如吸食总分与总氮、糖碱比、氮碱比、磷、镁显著相关，杂气与总氮、糖碱比、氮碱比、磷、镁和还原糖显著相关。

At the prefecture scale, the relationship became complicated between chemical components and leaf quality, and more chemical components were needed to represent leaf quality. For example, significant correlation in Zunyi prefecture was found between smoking total scores with total nitrogen, nitrogen to nicotine ratio and nicotine, and between offensive odor with total nitrogen and chloride.

在省级尺度，烟叶化学成分与烟叶品质的关系更为复杂，需用更多的化学成分(碳水化合物、含氮化合物及矿质养分)才能综合反映烟叶的品质，如吸食总分与总氮、糖碱比、氮碱比、磷、镁显著相关，杂气与总氮、糖碱比、氮碱比、磷、镁和还原糖显著相关。

The result showed there existed significant differences among families in seedling growth, dry matter accumulation, leaf shape as well as root parameters at high and low nitrogen levels. Remarkable reduction in seedling height, dry matter accumulation, leaf and root parameters were observed under low nitrogen stress, whereas larger proportion of photosynthesis production was allocated into roots to promote nitrogen absorption. Family variation in seeding growth, leaf and root parameters were increased under low nitrogen stress in comparison with high nitrogen level, which would be benefit to discriminate superior L. chinense families with high nitrogen efficiency. Nitrogen efficiency of different L.

结果表明：不同氮素水平下，马褂木苗的生长、干物质积累、叶片和根系等性状皆存在显著的家系遗传差异；低氮胁迫将显著抑制马褂木苗叶片发育和根系生长，影响苗高生长和干物质积累，但低氮素水平下生产的光合产物则较多地分配至地下根系部分以促进对氮素的吸收利用；与高氮处理比较，低氮胁迫加大了苗木生长、叶片和根系参数等家系遗传分化，有利于鉴别高氮效率的马褂木优良家系。

Field experiment was conducted to investigate the effect of nitrogen application rate on fresh grass yield and quality of oat. The results showed that fresh and dry grass yield of oat "Baoluo" increased with the increment of N application rate from 112.5 to 135kg/hm^2. At the same time, content of crude protein, total phosphorus, total calcium and crude ash in dry grass were improved, but content of crude fibre was decreased.

田间试验表明，燕麦新品种&保罗&在施氮量为90~135kg/hm^2，的情况下，其植株鲜草和干草产量随着施氮量的增加而增加；干草中粗蛋白质、全磷、全钙、粗灰分含量随着施氮量的增加而提高，粗纤维含量则随着施氮量的增加而降低。

The observation and monitoring were carried out for one year. Improvements resulted from the project include suspended particles, transparency, concentration of chlorophyll A, total organic carbon, total nitrogen. Factors that did not show obvious improvement include electrical conduction, concentration of nitrate nitrogen, ammonia nitrogen, nitrous nitrogen, phosphate salts. Finally, factors that were influenced by environment include water level, temperature, pH, total phosphorus, chloride salts.

历经一年的试验，因设备投入而改善之因子为溶氧、浊度、悬浮固体、透明度、叶绿素a、总有机碳、总氮等7项，无明显变化之项目为导电度、硝酸盐氮、氨氮、亚硝酸盐氮、磷酸盐等5项，受环境影响因子为水位、水温、pH、总磷、氯盐等5项。

In corn seed samples taken after September 3, total protein content, prolamine and Glutelin content from treatments with nitrogen application were significantly higher than that of without N application, and the contents of Albumin and Glutelin were slightly higher than that of without N application treatment.

氮、磷、钾对优质玉米籽粒淀粉及其组分的影响氮、磷、钾有利于籽粒淀粉含量的提高及其组分品质的改善。氮、磷、钾平衡施用较不施氮、不施磷和不施钾，使高淀粉玉米四单158分别增加淀粉2.l、5.3和4＊个百分点，依次增加支链淀粉 3二、5.9和 5.3百分点；使普通玉米吉单 342分别增加淀粉 1.3、11和1.6个百分点，依次增加支链淀粉2.1、3。

The distribution of nitrogen concentration and the microstructure of the nitrided layer were measured and observed by EPMA and SEM respectively.

在氮气中对304奥氏体不锈钢进行固溶渗氮，用电子探针测定了渗氮层的氮浓度分布，用扫描电子显微镜观察了渗氮层的金相组织。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。