Even nitrogen, which is a gas in its elemental state, is normally absorbed from the soil as nitrate ions.
即使是元素状态为气体的氮，也通常作为硝酸根离子从土壤中被吸收。
A century earlier, Henry Cavendish had noted the existence of a residual gas when oxygen and nitrogen are removed from air, but its importance had not been realized.
一个世纪前，亨利·卡文迪什注意到当空气中的氧气和氮气被除去，还有其他剩余气体存在，但人们还没有认识到它们的重要性。
Then anaerobic bacteria take that nitrate and turn it into harmless nitrogen gas.
最后厌氧菌将硝酸盐转化成无害的气体氮。
Check out the latest catalog from the Producto Machine Co. (Bridgeport, ct). Types range from nitrogen gas to urethane-and more.
查看Producto机械公司的最新产品目录，品种繁多，从氮气弹簧到乙烷气弹簧等等还有更多。
One of these comes from making fertilisers, using the Haber-Bosch process which converts nitrogen gas into ammonia.
其中一种是通过将氮气转换成氨气的Haber -Bosch工序来制造肥料。
These creatures, now called anammox bacteria, transform caustic and hazardous ammonium into dinitrogen, the harmless nitrogen gas that makes up 78% of the air we breathe.
这些微生物被命名为anammox，它可以把碱和有害的氨转化成氮气，无害的氮气是我们呼吸的空气的主要组成成分，占到了空气的78%。
Then it gets rather more high-tech. Capua's high-vacuum, low-temperature equipment removes bergaptene, an irritant, from the oil; and it is then stored under nitrogen gas to stop it oxidising.
后来萃取的方法更加更高科技化了，卡普阿公司的高压低温设备能将刺激物，bergaptene(一种脂)与油分离；然后将香油储存在氮气中防止其氧化。
As well as carbon dioxide, planes emit nitrogen oxide, another nasty gas.
除了二氧化碳，飞机还释放出另外一种有害气体——一氧化碳。
Nitrogen is the most common gas in the earth's atmosphere, and at a nuclear plant the main radioactive form is known as nitrogen-16.
氮是地球大气中最平常的气体，它在核电站中的主要放射性形式被叫做氮16。
Here, delicate rings of colorful glowing gas (nitrogen-red, hydrogen-green, and oxygen-blue) outline the tenuous walls of the hourglass.
图中精美而多彩的环状炽热气体云(红色为氮，绿色为氢，氧为蓝色)描绘出了纤细的沙漏形状。
Nitrogen gas with different displacing velocity and pressure was used to displace the core in testing, the permeability damage and correlation analysis caused by velocity sensitivity were obtained.
实验用氮气以不同的驱替速度和驱替压差驱替岩心，得到由速敏性引起的渗透率损害及相关分析结果。
The most commonly used work gas: argon, nitrogen, oxygen, air and H35, argon-nitrogen gas mixture, etc.
最常用的工作气体有：氩气、氮气、氧气、空气以及H35、氩-氮混合气体等。
This solid generant buns in an enclosed chamber to produce harmless nitrogen gas.
这种物质燃烧时会产生无害的氮气。
After purging with nitrogen gas and cooling to 80. degree. C, the contents of the reactor are bottled.
在用氮气吹扫和冷却到80度后，反应器中的物质被瓶装。
Burning magnesium reacts with nitrogen gas to give solid magnesium nitride.
燃烧的镁与氮反应，生成固态氮化镁。
The supply of nitrogen gas can be ensured only by steady run of nitrogen generator.
只有制氮设备的稳定运行，才能保证氮气供应。
Shell's coal gasification process is a dry process that USES nitrogen gas to transport powdered coal to the burners.
壳牌煤气化技术采用干法进料，用氮气将煤粉送到气化炉。
When Sodium azide burns, it's major product is Nitrogen gas, which makes up around 78% of the Earth's atmosphere.
当钠叠氮化物燃烧时，它主要产生的是氮气，氮气在地球空气中占78%。
Based on traditional biological nitrogen removal theory, nitrogen removal involves nitrification of ammonia to nitrate or nitrite followed by denitrification of nitrate or nitrite to nitrogen gas.
依据常规生物脱氮原理，脱氮过程包括将氨氮氧化为硝酸盐氮或亚硝酸盐氮的硝化反应和将硝酸盐氮或亚硝酸盐氮还原为氮气的反硝化反应。
Introduced the structure and characteristics of nitrogen gas spring, listing several kinds of application in auto die, and finally points out its way in application note.
介绍了氮气弹簧的结构及其特点，列举了其在汽车模具中的几种应用方式，最后指出其在应用中的注意事项。
It can economize oil nitrogen gas as well as make full use of recovery steam to use steam to bake the fire in the converter cover opening.
转炉氧枪口采用蒸汽封火，既节约有油氮气，又利用回收蒸汽。
The use of cryogenic nitrogen gas jet to reduce the temperature of cutting zone and to avoid oxidation wear of tool in high speed milling titanium alloy was presented.
为降低切削区温度、防止刀具的氧化磨损，提出在低温氮气射流条件下进行钛合金的高速铣削加工。
The article resumed applications of controllable atmosphere in heat treatment and powder metallurgy industry and laid stress on the newly developed nitrogen gas generating process by membrane.
概述了可控气氛在热处理、粉末冶金工业的应用，并重点介绍了近年来新开发的膜制氮工艺。
The nitrogen gas precharged bladder inside the Pulse-Stop dampens the pressure pulsations created by the reciprocating action of the pumps.
氮气首先给气囊充气，以消除脉冲停止时的由往复式活塞泵产生的压力脉动。
The mechanism of oil vapour loss is discussed and the application of nitrogen gas sealing technique to store and transportation is introduced.
概述了油品蒸发损耗的机理。介绍了氮气密封技术在储运生产中的应用。
Oxygen is purged from the chamber using nitrogen gas, which is introduced in a controlled manner via a 'nitrogen knife' at the web inlet and via an injector in the curing chamber.
清除氧是由室内使用氮气，这是实行控制的方式通过'氮刀'在网络入口，并通过一个注射器在治疗室。
Combined with the engineering practice of nitrogen gas well drilling in Mandong-2 well, the utility of optimization program of gas drilling equipment package of Tarim oilfield are verified.
结合满东2井氮气钻进的工程实践，验证了塔里木油田气体钻井装备配套优化方案的实用性。
Combined with the engineering practice of nitrogen gas well drilling in Mandong-2 well, the utility of optimization program of gas drilling equipment package of Tarim oilfield are verified.
结合满东2井氮气钻进的工程实践，验证了塔里木油田气体钻井装备配套优化方案的实用性。
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