最后厌氧菌将硝酸盐转化成无害的气体氮。
Then anaerobic bacteria take that nitrate and turn it into harmless nitrogen gas.
利用宏观分析、显微检验、硬度测试和装车试验等手段，对引进奥地利重型汽车内齿圈按照新的气体氮碳共渗工艺处理后的质量进行了研究。
The quality analysis for gas nitrocarburized inner gear ring of heavy truck imported from Austria was taken by means of macro/micro-examination, hardness measuring and running test.
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。
Even nitrogen, which is a gas in its elemental state, is normally absorbed from the soil as nitrate ions.
主要的差别是，相比于太阳，阿连德陨石缺失了大部分的挥发性元素，例如氢、碳、氧、氮和稀有气体。
The major difference is that Allende is depleted in the most volatile elements, like hydrogen, carbon, oxygen, nitrogen, and the noble gases, relative to the Sun.
手术之前，患者会吸入这些混合着氧气或一氧化二氮的麻醉气体。
Before a procedure, patients inhale these gasses, which are mixed with either oxygen or nitrous oxide.
他们将容器充满由蒸发液态氮和液态氧得到的纯空气，再加入水蒸气和一些痕量气体。
They fill the container with pure air made by evaporating liquid nitrogen and liquid oxygen, and add water vapour and some trace gases.
农业产生的温室气体比交通运输所有方式加起来还要多，并且还进一步促成了从氮污染到水土流失等许多其它问题。
Agriculture produces more greenhouse gases than all methods of transport put together, and contributes to a host of other problems, from nitrogen pollution to soil erosion.
虽然在地球大气层中的浓度甚微，一氧化二氮是一种很强的温室气体，而且正成为破坏平流层臭氧的主因。
Although present in minute concentrations in Earth's atmosphere, nitrous oxide is a highly potent greenhouse gas and is becoming a keyfactor in stratospheric ozone destruction.
虽然二氧化碳是更为普遍的温室气体，但与二氧化碳相比，一氧化二氮是其致暖潜力的300倍以上。
Compared with carbon dioxide, nitrous oxide is 300-fold more potent in terms of its warming potential, though carbon dioxide is a far more prevalent greenhouse gas.
周日发表的一项研究显示北极永冻土壤解冻可以释放出氧化亚氮，俗称笑气。 这种温室气体对气候变化的贡献一般为世人所忽视。
OSLO (Reuters) - Thawing permafrost can release nitrous oxide, also known as laughing gas, a contributor to climate change that has been largely overlooked in the Arctic, a study showed on Sunday.
接下来是动物粪便——所有动物的粪便都产生一氧化二氮，一种温室效应是CO2 296倍的温室气体。
Then there's manure —all that animal waste generates nitrous oxide, a greenhouse gas that has 296 times the warming effect of CO2.
接下来是动物粪便——所有动物的粪便都产生一氧化二氮，一种温室效应是CO2 296倍的温室气体。
Then there's manure - all that animal waste generates nitrous oxide, a greenhouse gas that has 296 times the warming effect of CO2.
集约化农业生产使用化肥，施到土壤中的化肥会释放强大的温室气体一氧化二氮。
Intensive farms also use fertilizers which release the powerful greenhouse gas nitrous oxide when applied to the soil.
特别令人担忧的是强效温室气体一氧化二氮排放的不确定性。
Of particular concernis the uncertainty over emissions of the potent greenhouse gas nitrousoxide.
谷物和碳水化合物的足迹最小，每磅食物只释放3磅温室气体，几乎没有氮污染。
Cereals and carbohydrates had the smallest footprints, with each pound of food releasing only 3 lb of greenhouse gases and almost no nitrogen pollution.
但是，全球温室气体排放实际上有相当一部分是其他气体，如N2O(一氧化二氮)和CH4(甲烷)。
But a large proportion of global greenhouse gas emissions are actually other gases, such as N2O (nitrous oxide) and CH4 (methane).
两位研究人员考虑了全球畜牧业生产的三个方面：温室气体排放，生物质消耗和氮排放。
The pair considered three aspects of global livestock production: greenhouse gas emissions, biomass consumption and nitrogen emissions.
虽然组成地球大气78%的氮是一种惰性气体，但它却有多种化学式。
Nitrogen, which, makes up about 78% of the Earth's atmosphere, is an inert gas but it has more reactive forms.
其它气体，如甲烷、一氧化二氮等，尽管没有像二氧化碳那样严重的影响气候，但他们依然在加剧全球变暖。
Many other gases, such as methane and nitrous oxide, contribute to warming, although not as much as carbon dioxide.
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。
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.
这种正式名为一氧化二氮的气体对臭氧层所构成的威胁，可能很快就会超过氟氯烃(CFC)化学品。而后者自上世纪八十年代以来就已被限制使用。
The gas, properly known as nitrous oxide, could soon pose a bigger threat to ozone than CFC chemicals, the use of which has been restricted since the 1980s.
这些计量分配器是一种储藏柜，能储存4到120瓶酒之间。柜子一旦打开，里面就会充满诸如氮或氩之类的惰性气体，从而氧气无法进入。
These are cabinets which hold anywhere between four and 120 bottles that, once opened, are topped up with inert gases like nitrogen or argon to keep the oxygen out.
她一直在测算残渣的收益、土壤的有机碳含量和温室气体排放量（二氧化碳、甲烷和一氧化二氮）。
She is measuring residue yields, soil organic carbon, and greenhouse gas emissions (carbon dioxide, methane, and nitrous oxide).
对一些造成气候变化的气体，如甲烷和氧化亚氮(一氧化氮，笑气)，来说，情况确实如此。
That's the case for some of the gases that contribute to climate change, such as methane and nitrous oxide.
一项最新研究表明生物炭对诸如一氧化二氮、笑气之类由农业生产造成的温室气体排放可能会产生影响，这些气体的排放对气候变化来说可不是什么好事。
And a new study shows that biochar could have an impact on agriculture's other greenhouse gas emission: nitrous oxide, or laughing gas, which is no laughing matter when it comes to climate change.
在那里，经称为脱氮的过程，微生物把氮转化为一氧化二氮(又称笑气)和一种称为二氮的惰性气体。
There, in a process called denitrification, microbes convert the nitrogen into nitrous oxide (also called laughing gas) and an inert gas called dinitrogen.
在那里，经称为脱氮的过程，微生物把氮转化为一氧化二氮(又称笑气)和一种称为二氮的惰性气体。
There, in a process called denitrification, microbes convert the nitrogen into nitrous oxide (also called laughing gas) and an inert gas called dinitrogen.
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