无论如何，同时地检测呼吸中的氧化一氮、一氧化碳、,过氧化氢物、亚硝酸盐、硝酸盐,、戊烷和乙烷，将能对哮喘做确定性的诊断。
However, simultaneously monitoring nitric oxide, carbon monoxide,hydro-peroxides, nitrites, nitrates, pentane and ethane in the breath, wouldallow a much more definitive diagnosis of asthma.
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.
食盐添加量越小，腌腊鱼中亚硝酸盐含量、酸价和挥发性盐基氮含量越高；
The nitrite content, acid value and TVB-N content of cured fish were high with low salt addition.
油炒则使总酸性物质、硝酸盐含量增加，氨基态氮、维生素c、可溶性糖、亚硝酸盐含量降低。
Frying increased the contents of acid and nitrate, decreased the contents of amino-N, soluble sugar, Vitamin c, nitrite.
另外柱a对硝酸盐氮和亚硝酸盐氮的去除效果也优于柱b。
Besides the removal ratios of nitrate and nitrite in column a were higher than column B.
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。
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.
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.
提出了紫外分光光度法同时测定生活饮用水中的硝酸盐氮和亚硝酸盐氮的含量。
This paper presented the simultaneously determine the nitrate nitrogen and the nitrous nitrogen in drinking water by UV.
降解及络合池塘的氨氮、硫化氢、亚硝酸盐、重金属离子及其它有害物质，消除水体油粘感及去除污臭味。
It can degrade and scale ammonia, hydrogen sulfide, nitrite, heavy metal ions and other harmful substances in pool, and eliminate oil viscosity and foul odor.
降解养殖水体的氨氮、硫化氢、亚硝酸盐等有害物质，有效避免鱼虾因水质恶化而引发的病害。
It can degrade ammonia, hydrogen sulfide, nitrite and other harmful substances of breeding water, effectively avoid diseases caused by deterioration of water quality.
并进一步考察了上述两种底泥对水体中有机质、氨态氮和亚硝酸盐的去除能力，探寻了利用异养硝化作用改善水质环境的潜力。
From another point of view, our study tries to find a potential of heterotrophic nitrification for the improvement of contaminated aquatic environment.
结果表明：利用曝气时间实时控制，在每个周期内氨氧化菌（AOB）降解氨氮质量大于亚硝酸盐氧化菌（NOB）降解亚硝态氮质量；AOB的净增数量大于NOB净增数目。
Analysis shows that more nitrogen is oxidized by ammonia oxidizing bacteria(AOB) than by nitrite oxidizing bacteria(NOB) with more growth of the AOB than the NOB in each cycle when using this method.
结果表明：利用曝气时间实时控制，在每个周期内氨氧化菌（AOB）降解氨氮质量大于亚硝酸盐氧化菌（NOB）降解亚硝态氮质量； AOB的净增数量大于NOB净增数目。
Analysis shows that more nitrogen is oxidized by ammonia oxidizing bacteria(AOB) than by nitrite oxidizing bacteria(NOB) with more growth of the AOB than the NOB in each cycle when using this method.
在低温中湿变黄条件下烤后烟叶物理性状较好，烟碱、总氮、淀粉、硝酸盐和亚硝酸盐含量含量较低；
The physical properties of cured tobacco leaf was best under low temperature and middle humidity yellowing condition, every index was within the range of the suitable one;
在低温中湿变黄条件下烤后烟叶物理性状较好，烟碱、总氮、淀粉、硝酸盐和亚硝酸盐含量含量较低；
The physical properties of cured tobacco leaf was best under low temperature and middle humidity yellowing condition, every index was within the range of the suitable one;
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