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。
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.
树木也依赖于氮气才能生长。
而最棒的氮气大餐来自于喜苔类细菌。
And the best buffet of nitrogen comes from moss-loving bacteria.
厚厚的氮气组成的大气层你弥漫着烟雾和云。
The thick nitrogen atmosphere holds fog, mist, smoggy haze and rain clouds.
氮气会经过燃烧室。
通过氮气进行降温的瞬间。
我们了解氮气中有多重键，我们看看氮气。
We know nitrogen bonds multiple bonds, so let's look at nitrogen.
这是氮原子，这是氮原子，然后这是氮气的分子轨道。
Here is the atomic nitrogen, here is the atomic nitrogen and these are the orbitals of molecular nitrogen.
我们接下来会问一些问题，我们有氮气，氢气，把它们混合。
And we're going to ask the question, so I take nitrogen, I take some, hydrogen, I mix them together in a container.
问题是如何处置氧化氮副产品，这对环境污染远比氮气更严重。
The problem has been how to dispose of the nitrous oxide byproduct, which is far worse for the environment than nitrogen.
但是通过加入氮气和铜，会改变二氧化钛在可见光下的催化活性。
But adding nitrogen and copper to the mix shifts the preference of the titania tubes to visible light, Grimes says.
我想问，当达到平衡后，氮气，氢气和氨气的分压，分别是多少？
And I'm going to ask, after I reach equilibrium, what is the partial pressure of nitrogen hydrogen and ammonia?
工厂生产氧气，氮气等气体，他们采用德国技术，并聘请德国员工。
Gases such as oxygen, nitrogen, etc are produced at the plant.They use a German technology and will hire German employees as well.
工厂生产氧气，氮气等气体，他们采用德国技术，并聘请德国员工。
Gases such as oxygen, nitrogen, etc are produced at the plant. They use a German technology and will hire German employees as well.
然而充氮气的气球定期的发动它的动力装置升高到平流层。
Although helium-filled weather balloons regularly launch instruments high into the stratosphere.
如果燃烧室的温度足够高的话，实际上在氮气和氧气之间，会发生一些反应。
Well, if you get the combustion chamber hot enough, in point of fact, there are some reactions between nitrogen and the oxygen.
有些农田被牲口过度放牧亏损，暴雨淹没了田地，缺乏氮气造成玉米的秆子矮小。
Heavy rains flooded the land. A lack of nitrogen in the soil made the corn stalks puny.
表面活性剂本身燃烧时除了生成水、二氧化碳和氮气之外，不会生成其他的排放物。
The surfactant itself also burns without creating emissions beyond water, carbon dioxide and nitrogen.
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。
One of these comes from making fertilisers, using the Haber-Bosch process which converts nitrogen gas into ammonia.
虽然对某些人来说，再怎么担忧氮气，也比不上抢搭最新的环保时尚去担忧二氧化碳。
To some, worries about nitrogen will doubtless seem to be no more than the latest environmental bandwagon.
研究者们在他们的纳米管上引入了氮气，同时在纳米管的表面负载了铜和铂的纳米颗粒。
The researchers added a little nitrogen to their nanotubes and loaded copper and platinum nanoparticles onto the surfaces.
但是空气中的氮气中的氮原子却会被一个叫做同位素的有着不同数量中子的氮原子所替换。
But the nitrogen in the air was replaced with a nitrogen atom with a different number of neutrons, called an isotope.
地球大气含有大约78%的氮气、21%的氧气和痕量的水蒸气、氩气和二氧化碳等其它气体。
The atmosphere is roughly 78 percent nitrogen, 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.
蓝色和紫色是来自较轻的气体比如氢和氦，而更低点的氮气能在绿色极光的底部添上红色的边缘。
Blues and purples are created by lighter gases such as hydrogen and helium, while low-level nitrogen can add red fringes to the bottoms of green auroral curtains.
虽然氧化氮是种温室效应气体，但当用作火箭燃料燃烧时，排出的副产品仅仅是热氧气和热氮气。
While nitrous oxide is a powerful greenhouse gas, when it's burned as rocket fuel, the only byproducts are hot oxygen and nitrogen.
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。
Check out the latest catalog from the Producto Machine Co. (Bridgeport, ct). Types range from nitrogen gas to urethane-and more.
由于巴夭人对暴露在高压下的限制条件认识不足，许多人因为血液中充斥了致命的氮气泡儿导致残疾或毙命。
Unaware of the need to restrict their exposure to pressure, countless Bajau have ended up crippled or killed by deadly nitrogen bubbles in their bloodstream.
由于巴夭人对暴露在高压下的限制条件认识不足，许多人因为血液中充斥了致命的氮气泡儿导致残疾或毙命。
Unaware of the need to restrict their exposure to pressure, countless Bajau have ended up crippled or killed by deadly nitrogen bubbles in their bloodstream.
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