杭州拟控制机动车污染物总量，为大气解压。
Hangzhou intended to control the total amount of vehicle pollutants, in order to lessen the pressure of the atmosphere.
本文叙述了目前城市街道峡谷内机动车污染物扩散的研究现状。
This paper describes the current study on vehicle pollutants dispersion in the urban street canyon.
虽然近年来机动车排放的有害污染物大幅减少，但机动车的数量一直在稳步增加。
Although recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing.
为了找到污染物浓度和机动车数量的关系，科学家们在北京的主要路段设置了微波雷达记录每小时机动车的流量。
To study the correlation between pollutants and traffic, microwave radars have been installed at main roads in Beijing to count the vehicles on the road each hour.
机动车排放颗粒物是重要的空气污染物。
Particles from vehicle emission are important air pollutants.
对大气边界层内大气湍流和建筑物对道路交叉口处机动车排放气态污染物扩散的影响进行了研究。
The effect of atmospheric turbulence and buildings on the dispersion of gaseous pollutants emitted from motor sources was investigated at the road intersection in the atmospheric boundary layer.
通过数值计算的方法分析了城市街道峡谷内机动车排气污染物的扩散特性。
The dispersion characteristics of vehicular pollutant within street canyon were analyzed by using the method of numerical calculation.
有毒有害空气污染物的环境影响是国内外研究的热点，而机动车排放是其重要源之一。
Studying the environmental effects of toxic air pollutants is currently very important in the world.
论述了随着城市机动车保有量的急剧增长，机动车排放污染物对城市大气环境的影响也越来越大。
The influence of emission pollutants from automobile on the air environment is more and more serious with the increasing of total automobile number in city.
本文针对该隧洞的特点依据保障隧道内乘驶机动车各人员健康、卫生和隧道的营运安全为原则对污染物浓度设计限值进行了研究。
This paper made some investigation about the permissible concentration limits about contaminations in roadway tunnel from the point of view of the effects on the body.
在金华，即使污染不那么严重的日子，城市的天际线也都消失在烟尘之中，越来越多的大气污染物是从机动车排气管中排出的。
On all but the best days in Jinhua, for example, the city skyline disappears behind a dense haze of smog and particulates; more and more of that atmospheric soup is pouring out of tailpipes.
在金华，即使污染不那么严重的日子，城市的天际线也都消失在烟尘之中，越来越多的大气污染物是从机动车排气管中排出的。
On all but the best days in Jinhua, for example, the city skyline disappears behind a dense haze of smog and particulates; more and more of that atmospheric soup is pouring out of tailpipes.
应用推荐