随着我国国民摩托车保有量的不断增长，摩托车尾气排放污染已成为城市机动车排气污染的一个不容忽视的部分。
As the motorcycle amount increases continuously, the tail gas pollution of motorcycle becomes a non-negligible part of the tail gas pollution from city vehicles.
机动车尾气排放不断增加以及城市通风能力降低，常导致城市街谷内的空气污染。
High pollution levels often occurred in urban street canyon due to the increased traffic emissions and reduced natural ventilation.
净化城市的大气环境，降低机动车尾气的排放污染是时代赋予的重任。
It is our important duty to decrease vehicles exhausting pollution and purify atmosphere.
探讨了简捷、快速地估算机动车尾气污染物排放系数的方法，并计算了鞍山市机动车尾气中CO的排放系数。
The simple and quick method for emission factor estimating of vehicle emission pollutants was discussed in the paper, and the emission factor of CO of mobile emissions in Anshan City was calculated.
论述了环境空气中铅染的主要来源是机动车排放的尾气，推广使用无铅汽油可明显降低机动车尾气排放对环境空气中铅污染。
The released vehicle exhaust was mainly sources of the lead pollution on the environmental air. The unleaded gasoline may reduce the lead pollution in environmental air of the vehicle exhaust release.
上海市机动车正以每年10万辆的速度递增，机动车尾气排放已成为造成上海大气污染的主要环境问题之一。
The increment ratio of motor vehicle Numbers in Shanghai has been risen for 10 thousand annually in recent years. Vehicle emission became one of the major environmental issues in Shanghai.
大部分污染被归咎为燃煤电厂和机动车尾气排放。
Most of the pollution is being blamed on coal-fired power plants, together with vehicle emissions.
大部分污染被归咎为燃煤电厂和机动车尾气排放。
Most of the pollution is being blamed on coal-fired power plants, together with vehicle emissions.
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