开始被认为早期的地球的大气会释放氮同其他元素结合。
It was initially thought that the early Earth's atmosphere would have freed up nitrogen to bond with other elements.
其中的一些碳最终以烟雾而非二氧化碳的形式排放出来，而那些本该与碳结合的氧分子则转而与空气中的氮结合。
Some of the carbon therefore ends up as soot, rather than carbon dioxide, and oxygen that should be combining with carbon combines with nitrogen from the air instead.
事实上已经有先例摆在我们的面前了，在1909年，一位名叫Fritz Haber的德国化学家发现了一种生产氨的方法：将氮(从空气中分离得到)和氢结合在一起。
Indeed, there is a telling historical precedent. In 1909 Fritz Haber, a German chemist, discovered a new way to combine nitrogen from the air with hydrogen to produce ammonia.
最好的方式，似乎是一种可用氮结合荻磷铵(磷酸二铵)、酵母粉。
The best form of usable nitrogen seems to be a combination of di-ammonium phosphate (DAP) and yeast extract.
在这些情况下氮不会是可用的对于同其他元素结合，为了形成化合物和形成生命的建筑模块的链条。
Under these conditions the nitrogen would not be available to bond with other elements in order to form the compounds and chains that form the building blocks of life.
最常见的例子是有机化合物，亚硝酸盐类的同分异构体，其中一个碳原子以共价键与硝基中的氮原子结合。
The most common examples are organic compounds, isomers of nitrite esters in which a carbon atom is linked by a covalent bond to the nitro group's nitrogen atom.
目的探讨氧化亚氮结合利多卡因浸润麻醉应用于无痛人流的临床效果。
Objective To explore the clinical effects of combination of infiltration anaesthesia with lidocaine and laughing gas for the painless induced abortion.
氮杂茂可与结核菌内的一些P 450酶类紧密结合使其失活。
They also bind tightly to some of the TB P450 enzymes and inactivate them.
一旦与挥发性有机化合物结合，氮氧化合物就会在低压闷热天气造成烟雾或地面臭氧污染——导致人类呼吸系统问题。
When combined with volatile organic compounds, NOx can create smog or ground-level ozone pollution in hot stagnant weather - causing respiratory problems in humans.
结合笔者的工作，总结了近几年四氮杂卟啉及其金属配合物、聚合物和超分子体系研究的主要新进展和新成果。
Combined with the series of works made by the authors, the recent progresses in the research of porphyrazines and their complexes were reviewed.
它综合活性污泥法和SBR工艺特点，与生物选择器原理结合在一起，具有抗冲击负荷和除磷脱氮功能。
It synthesizes the characteristics of activated sludge processing and SBR in combination with a biological selector, shock loading and fluctuations in the influent can be completely buffered.
采用田间试验和室内化验相结合的方法，研究施用化学氮磷钾肥对大豆植株氮磷钾含量的影响及植株氮磷钾含量与产量之间的关系。
The field test and lab analysis were used to study the effect of fertilizing on contents of nitrogen, phosphorus, and potassium of soybean plants and the relation of yield and them.
细菌将氮原子的一部分分享，并与其他分子结合，使氮可以为这些细菌生存在植物上提供营养。
These bacteria split the nitrogen atoms apart and combine them with other molecules, making the nitrogen available to the plants that the bacteria are living on.
由于氮极大的惰性，不能与氧结合，所以这个问题被渲染得过分困难。
The problem was rendered extremely difficult by the extraordinary inertness of the nitrogen, which refuses to combine even with oxygen.
由氮原子与两个氢原子结合形成的化学基团。
A chemical group comprising nitrogen bound to two hydrogen atoms.
在糠醛精制过程中添加脱氮组分，采用物理抽提与化学反应相结合的方法对模拟基础油进行脱碱氮研究。
The research of furfural refining adding denitrogenation agents by the method of combining physical extraction and chemical reaction has been done.
一种配位(络合)化合物，其中的金属离子与氮、碳或氧等非金属原子结合生成有配位共价键的杂环。
An organic coordination (complexing) compound in which the metal ion is bound to atoms of nonmetals, e. g. nitrogen, carbon, or oxygen, to form a heterocyclic ring having coordinate covalent bonds.
结果表明，通过模型计算与地理信息系统相结合，便于评价不同水氮管理、不同降雨年型条件下区域农田土壤水、氮素行为。
When the simulation model combined with GIS, it was easy to evaluate regional soil nitrogen behaviors under different treatments of water and nitrogen.
我们提出了肺结核分支杆菌细胞色素P 450CYP121与三氮唑类药物氟康唑的复合物的晶体结构，揭示了唑类与亚铁血红素新的结合模式。
We present here the crystal structure of Mycobacterium tuberculosis cytochrome P450 CYP121 in complex with the triazole drug fluconazole, revealing a new azole heme ligation mode.
食品加工厂在应用前可通过测定蛋白质含量、氮溶解指数等指标结合感观分析来判别其应用性能。
Therefore, the use characteristics could be judged by determining the indexes such as protein content, NSI and sensory evaluation be-fore applying those products for food processing.
一块暴露在空气中几世纪没点燃过的煤炭，当他点燃时便会与它结合，所以说氮，在电流的刺激之下，可以燃烧。
As a lump of coal which has been in contact with oxygen for centuries without burning will combine with it when once ignited, so nitrogen, excited by electricity, will burn.
方法根据PET结果，结合临床疗效及血清尿素氮、血肌酐，对22例持续性不卧床腹膜透析(CAPD)患者的透析方案作适当调整。
Methods the PD schemes of 22 continuous ambulatory peritoneal dialysis (CAPD) patients were adjusted properly according to the results of PET, clinical manifestation, plasma BUN and creatinine levels.
Nosto与氮元素紧密结合，因此会释放出氢元素以作为燃料。
Nostoc fixes nitrogen and, in doing so, releases hydrogen that can then potentially be used as fuel.
由XPS测试结果得到了煤中各种不同形态硫、氮的结合能数值。
The binding energy of sulphur in different forms was obtained by XPS.
本文结合国内外最新的研究进展，对硝酸盐和亚硝酸盐的催化加氢脱氮进行了综述，并对该领域的研究进行了展望。
In this paper, the catalytic reduction of nitrate and nitrite were reviewed and the research progress was addressed. Finally, the future research in this field was recommended.
采用化学发光法，结合微机系统，研制了测量石油产品中含氮量的分析系统。
A nitrogen analysis system based on chemiluminescence detection and microcomputer has been developed for the measurement of nitrogen contents in petroleum products.
结合各碳源脱氮率、耗碳源量以及处理成本，选取基本处理的香樟叶作为最佳纤维素碳源。
Therefore, according to the nitrogen removal rate, consumption of carbon sources and treatment cost, cinnamomum camphor leaf is considered as the best denitrification carbon source in local region.
通过田间试验及室内分析相结合的方法，研究了大豆专用复混肥对轮作、连作大豆氮、磷、钾营养及产量的影响。
The paper studied the effect of complex fertilizer to yield and nutrtion of nitrogen, phosphorus and potassium of soybean in this experiment.
各处理在等氮水平下施肥，采用对辣椒施基肥和多次追肥相结合的施肥方案。
Every treatment is fertilized in the equal nitrogen level, namely we fertilize base fertilizer and then fertilize biogas slurry many times.
各处理在等氮水平下施肥，采用对辣椒施基肥和多次追肥相结合的施肥方案。
Every treatment is fertilized in the equal nitrogen level, namely we fertilize base fertilizer and then fertilize biogas slurry many times.
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