To reduce the noxious emissions from diesel engines through aftertreatment has been accounted as an important trend in methodological development.

用排气后处理方法来降低柴油机有害排放量已成为一个重要的研究方向。

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The culprits are the ever-present coal-fired power plants and giant heavy-industry complexes that fuel the country's growth, and more and more the noxious emissions of automobiles.

而这一切环境后果的罪魁祸首却正是推动中国经济获得快速增长的烧煤的火电厂和重工业厂房，以及汽车所排放出越来越多的废气。

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Emissions of greenhouse gases and other noxious chemicals are a worry.

温室气体和其他有毒化学品排放令人忧心。

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If cars were powered by fuel cells, noxious emissions and greenhouse gases would decline sharply.

ECONOMIST: Stepping on the gas

Catalytic converters typically used platinum group metals to reduce noxious emissions.

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Freezing would also stop any emissions of noxious fumes in cremation.

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