Nitro compound: Any of a class of chemical compounds in which the nitro group (-no2) forms part of the molecular structure.

硝基化合物：分子结构中含有硝基(- NO2)的任何一类化合物。

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All transition states, activation energies and potential curves of four possible reaction paths were obtained. It was found that the homolysis of n-no2 bond in five-membered ring is the initial step.

求得可能的四种不同热解反应通道的过渡态、活化能和位能曲线，发现其热解引发步骤为五元环上侧链n—NO2键的均裂。

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Reduced lung function growth is also linked to NO2 at concentrations currently measured (or observed) in cities of Europe and North America.

目前在欧洲和北美一些城市中肺功能减弱现象的增加也与目前测量(或观察到)的二氧化氮的浓度有关。

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The limit, set by the European Union, is 40 micrograms of NO2 per cubic metre of air.

BBC: Dundee Biomass Centre

Four years ago, Cotswold District Council made an Air Quality Management Area Order because the NO2 levels at the Air Balloon roundabout exceeded the recommended thresholds.

BBC: Google

He was made aware of the concerns by a Cotswold councillor asking what could be done about high levels of nitrogen oxide (NO2) in the area off the A417.

BBC: Google