查询词典 nitrogen

Tetrazine ring is an energetic nitrogen hexa-heterocyclic group with nitrogen mass fraction of 68.3%,so it is a very effective structure unit in the design of high energetic,insensitive materials.The tetrazine high-nitrogen energetic materials are new kinds of ones researched and reported widely at home and abroad in recent years.

四嗪环是一种含氮质量分数达68.3%的六元氮杂环含能基团，是设计高能钝感含能材料中非常有效的结构单元；四嗪类高氮含能材料也是近年来国内外研究和报道较多的一种新型含能材料，部分具有生成焓高、热稳定性好和感度较低等特点。

This generator adopts PSA transforming absorpion,which uses carbon molecule to separate Oxygen and Nitrogen from air. It transfers compressed air,which is originated from air source, into absovbing untis formed by two tower after oil removing, drying, filtering, purifying of the air. The compessedair generates Nitrogen when it is transformingly absorbed in one tower, then it is sent to another tower for regeneration. It alternately circulates between two towers, which can unceasing achieve 98%-99.9% of pure and cheap Nitrogen..

本设备采用PSA变压吸附原理，利用碳分子筛在压力变化时具有分离空气中氮的能力，以空气为原料，将压缩空气经除油、干燥、过滤等净化处理后，送入双塔组成的吸附组件，压缩空气在一塔内经加压吸附后产生氮气，而另一塔在解吸再生，两塔交替循环，即可不断地得到纯度为98－99.9%的廉价氮气。

There was correlation between blood urea nitrogen and milk urea nitrogen,so the changing of milk urea nitrogen could reflect the accommodate condition of rumen degraded protein,rumen undegraded protein and energy.

由于乳尿素氮含量和血浆尿素氮含量之间具有一定的相关性，众多研究表明，通过乳尿素氮含量的变化可以反应出瘤胃降解蛋白、过瘤胃蛋白及能量的供应情况。

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。

Firstly, based on the acidity balance equation in ecosystem, together with the steady state mass balance equations of sulphur and nitrogen, formulae for calculating critical loads of not only acidity and sulphur, but also acidifying nitrogen and nutrient nitrogen were educed.

基于原有的生态系统酸度平衡关系，并结合临界状态下硫和氮的稳态质量平衡，推导出计算酸度、硫、酸化氮和营养氮临界负荷的公式。

Through analysis of variance, the best mass ratio of different coating material matching is found out: It is the best matching when the mass ratioof red clay membrane urea is 5:7,which can lengthen the eluviationing time for 11 days, reduce the nitrogen eluviationing loss by 16.12%; the amount of the clay quality has no use to lengthen the eluviationing time and the result is not obvious; when the quality ratio of urea and gypsum is 5:8,it can lengthen the eluviationing time for 8 days, reduce the nitrogen eluviationing loss by 23.86%;when the quality ratio of urea and gypsum is 5:7,it can lengthen the eluviationing time for 30 days, reduce the nitrogen eluviationing loss by 16.58% when the contrast urea N is all eluviated out ; it is the optimum matching association; When the quality ratio of the urea and the sulfur is 5:6, which is a optimum proportion ,it can l

根据对淋溶时间、经济成本等的对比，经过方差分析，找出了不同包裹材料的最佳质量比的搭配组合：红胶泥包膜尿素的质量比是5：7时最好，可以延长淋溶时间11天，减少氮素淋溶损失16.12%；粘土质量的多少对延长尿素的释放时间作用不大，效果不明显；石膏和尿素两者的最佳质量比是5：8时，可以延长淋溶时间8天，减少23.86%的氮素淋溶损失；硼砂和尿素的质量比是5：7可以延长淋溶时间30天，当对照尿素N素全部淋出时，减少16.58%的氮素淋出，是最优

Nitrogen also increased the rate of wheat yield of intercropping single for Gao Yu, reflecting the presence of wheat intercropped with nitrogen from the beans to the transfer of wheat, resulting in intercropping conditions decreased the sensitivity of wheat to nitrogen fertilizer.

同时施氮增加小麦产量的幅度以单作高于间作，这反映了在小麦蚕豆间作体系中存在着氮素由蚕豆向小麦的转移，导致在间作条件下小麦对氮肥的敏感性下降。

The results indicated that applying 105kg/hm^2 nitrogen and 75kg/hm^2 phosphorus fertilizer is the most economic and rational method; applying 45000kg/hm^2 farm manure with phosphorus as base fertilizer, two thirds nitrogen as seed manure and one third nitrogen as topdressing is more economic and rational; the best planting density is 67500plant/hm^2; the transplanting style after growing seedlings in small arch greenhouse in early spring and the multiple cropping style after rape harvesting should be extended over large areas; the multiple cropping style after wheat harvesting should be extended in the southern rivers rigions of this locality.

对&庆甜1号&进行了肥效、密度及分期栽培试验，结果表明，正常条件下地膜覆盖种植&庆甜1号&经济合理的氮、磷施用量为N 105kg/hm^2、P2O5 75kg/hm^2；45000kg/hm^2农家肥和磷肥一次性基施，氮肥的2/3作种肥，1/3作追肥施用方式较为经济合理；最佳种植密度为67500株／hm^2；早春小拱棚育苗移栽和油菜茬复种两种种植模式宜在当地大面积推广，麦茬复种适宜在当地南部川道地区推广。

The results indicated that applying 105kg/hm2 nitrogen and 75kg/hm2 phosphorus fertilizer is the most economic and rational; applying 45000kg/hm2 farm manure with phosphorus as base fertilizer, two thirds nitrogen as seed manure and one third nitrogen as topdressing is more economic and rational;the best planting density is 67500 zhu/hm2, the transplanting style after growing seedlings in small arch greenhouse in early spring and the multiple cropping style after rape stubble should be extended over large areas, the multiple cropping style after wheat stubble should be extended in the southern rivers rigions of this locality.

在陇东旱作条件下，通过对&庆甜1号&进行肥效、密度及分期栽培等试验，正常条件下施N 105kg/hm2、P2O5 75kg/hm2是地膜覆盖种植&庆甜1号&经济合理的氮、磷施用量；45000 kg/hm2农家肥和磷肥一次性基施、氮肥的2/3作种肥，1/3作追肥施用较为经济合理；最佳种植密度为67500株/hm2；早春小拱棚育苗移栽和油菜茬复种两种种植模式宜在当地大面积推广，麦茬复种适宜在当地南部川道地区示范推广。

Syntheses of diamond with a high concentration of nitrogen in laboratory provide a means for fabricating diamond with nitrogen concentration and form similar to those of the natural diamond and for fabricating diamond with "boron skin and nitrogen core".

合成具有完整晶型的高氮含量金刚石能提供一种人工合成类&天然&金刚石和&硼皮氮芯&金刚石的开创性技术。

The small blue capacitor has very high chances to go fully shorted compare to electrolytic capacitor which is very rare.

小蓝电容器具有很高的机会去充分地缩短了比较电解电容器，这是非常罕见的。

In the Italian campaigns of 1513 and 1515, when the Swiss won the victories of Novara and Marignan, he acted as army chaplain.

在意大利的运动， 1513年和1515年，当瑞士赢得了胜利，诺瓦拉和marignan ，他担任军队的牧师。