More than half of U.S. coal generators lack postcombustion NOx pollution controls.
超过一半的美国煤炭发电机缺乏二次燃烧氮氧化物污染控制。
Professor Boehman would like to see more research done so we can know for sure if (and how much) additional NOx pollution is caused by the use of nitrogen-enriched gasoline.
铂尔曼教授还表示，他希望看到更多的研究，以明确添氮汽油的使用到底会产生多少氮氧化物。
The research on NOX removal from flue gas is becoming a hot issue of air pollution control presently.
烟气脱氮技术的研究已成为目前大气污染控制中的一个热点课题。
Reduction of NOX emission in burning coal is an important subject to prevent air pollution.
降低煤燃烧过程中NOX的排放是当前防止大气污染的一项重要内容。
When combined with volatile organic compounds, NOx can create smog or ground-level ozone pollution in hot stagnant weather - causing respiratory problems in humans.
一旦与挥发性有机化合物结合，氮氧化合物就会在低压闷热天气造成烟雾或地面臭氧污染——导致人类呼吸系统问题。
While its popularization and application is limited by the emission of heavy metals, dioxin, NOx, SOx, etc. Therefore, it is necessary to study the secondly pollution in sludge incineration process.
阐述了焚烧过程中产生的重金属、二口恶英、氮氧化物、硫氧化物等的排放限制了污泥焚烧技术的推广和应用，因此对污泥焚烧二次污染控制的研究就显得非常重要。
While its popularization and application is limited by the emission of heavy metals, dioxin, NOx, SOx, etc. Therefore, it is necessary to study the secondly pollution in sludge incineration process.
阐述了焚烧过程中产生的重金属、二口恶英、氮氧化物、硫氧化物等的排放限制了污泥焚烧技术的推广和应用，因此对污泥焚烧二次污染控制的研究就显得非常重要。
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