应特别密切注意氮和二氧化硫的化合物。
Compounds of nitrogen and sulphur dioxide should be particularly closely watched.
他们发现，在一定时间内关闭空气流通可以最大程度上减少氮和有机化合物的含量。
They found that turning the air off for a set amount of time maximized nitrogen and organic compound removal.
一氧化二氮在地平面时是稳定的，但在高层大气中则分解而形成某种化合物，从而引发化学反应而破坏臭氧层。
Nitrous oxide is stable at ground level but breaks down in the upper atmosphere to form compounds that trigger chemical reactions that destroy ozone.
这些燃烧过程同样释放化学物质如甲烷、氮氧化合物、挥发性的有机化合物和一氧化碳在光照下反应形成臭氧。
These same processes also release chemicals that combine in sunlight to form ozone: methane, nitrogen oxides, volatile organic compounds, and carbon monoxide.
研究显示，在消除有机化合物和氮含量方面，该设备与传统机械处理设施的处理能力相当。
A study showed the devices are on par with traditional mechanical treatment facilities for removing organic compounds and nitrogen.
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.
氮循环的一个关键组成部分就是——在大气中，将纯净的氮固定为成含氮化合物的形式——这或多或少要完全依赖于生物(闪电仅起一点儿作用)。
One crucial part of this cycle-the fixing of pure nitrogen from the atmosphere into useful nitrogen-containing chemicals-depends more or less entirely on living things (lightning helps a bit).
氧气吗当然是多多益善，而三氧化二氮分子在破坏了一系列挥发性有机化合物中的一个分子后也很快就寿终正寝了。这种有机化合物是构成白天烟雾的另一种成分。
The oxygen will bother no one, and the nitrogen trioxide soon meets its end destroying one of a range of volatile organic compounds that are another constituent of daytime smog.
氮循环也一样，它将空气中的纯氮转化成有用的化合物，而人类使其加速了150%以上。
So too is the nitrogen cycle, which converts pure nitrogen from the air into useful chemicals, and which mankind has helped speed up by over 150%.
然后，当这些化学物质与氮氧化合物(存在于汽车排放的废气中)发生化学反应时，就会形成臭氧，这会对人类和动物的健康构成更大的威胁。
When the chemicals react with nitrogen oxide--found in pollution from cars--they form ozone, a much bigger health threat to humans and animals.
这些固态氮冰在阳光照射下会产生化学反应，生成粉色或红色的化合物。
The pinkish deposits constitute a vast south polar cap believed to contain methane ice, which would have reacted under sunlight to form pink or red compounds.
研究表明，水质43.7%的化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。
According to the study agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water) 67% of phosphorus and 57% of nitrogen discharges.
研究表明，水质43.7%的国家化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。
According to the study, agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water), 67% of phosphorus and 57% of nitrogen discharges.
1956年，施特恩巴赫在胡乱处理一种苯二氮卓类化合物的时候，用甲胺化合制成了一种白色晶状粉末，标上"Ro5"06卯"放在了架子上。
In 1956 Mr Sternbach, fiddling with yet another benzodiazepine, treated it with methylamine, made a white crystalline powder, labelled it Ro 5-0690 and put it away on a shelf.
鸟嘌呤：嘌呤类的有机化合物，常称为碱基，包含二个环，各含氮原子和碳原子，还有一个氨群。
Guanine: organic compound of the purine family often called a base consisting of two rings each containing both nitrogen and carbon atoms and an amino group.
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.
另外必须提供的微生物在与含氮如硫酸铵，氨水或尿素化合物生长介质，以及与无机磷酸盐。
Additionally the microorganisms must be supplied in the growth medium with nitrogen-containing compounds such as ammonium sulfate, ammonia, or urea, as well as with inorganic phosphates.
英国同意减少发电站氮氧化合物的排放量。
Britain agreed to cut emissions of nitrogen oxide from power stations.
研究表明黄酮类化合物能够通过影响身体生产能帮助调节血管张力的氧化亚氮来改善血管功能。
Studies have shown flavonoids appear to benefit blood vessel function by influencing the body's production of nitric oxide, which helps regulate blood vessel tone.
近来的报道表明某些氮桥稠杂环化合物还有抗肿瘤和抗hiv的功效。
In the recent report, some of these N-bridged heterocycles also can kill the tumour cell and the HIV.
胞嘧啶：嘧啶族的有机化合物。常被称为基，包含一个单环，内有氮原子和碳原子，还有氨群。
Cytosine organic compound of the pyrimidine family often called a base consisting of a single ring containing both nitrogen and carbon atoms and an amino group.
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.
补充大豆油使可消化粗脂肪的摄取提高，而减少可消化非纤维碳水化合物，另外粪氮排出量降低。
Soybean oil treatment increased digestible crude fat intake, and decreased digestible non-fiber carbohydrate intake and fecal N output.
合理选择离子氮化温度、气氛氮势和处理时间，能有效控制钛材氮化层中的化合物相的种类和相对含量。
The kind and relative content of nitrides in nitrided layer can be effectively controlled through appropriate selection of technological parameters.
仅含有氮杂原子的杂环化合物。
低分子量的胺是合成含氮有机化合物的重要原料。
Low molecular weight amines are important raw materials for synthesis of nitrogen_containing organic compounds.
低分子量的胺是合成含氮有机化合物的重要原料。
Low molecular weight amines are important raw materials for synthesis of nitrogen_containing organic compounds.
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