The tunnels are filled with exhaust emissions, coal dust and the roar of blasting.
隧道里充满着排出的废气、煤尘和爆破声。
The increasing number of vehicles however leads to more exhaust emissions and traffic noise.
然而，汽车数量日益增加导致废气排放物增加以及产生交通噪音。
The greatest amount of exhaust emissions are produced at idle and during low-speed operation .
排气中最大量的排放物是在怠速和低速运行时产生的。
Aircraft flying in the stratosphere is the large number of exhaust emissions and garbage here.
飞机也在平流层中飞行，把大量废气和垃圾排放在这里。
The problem of exhaust emissions from motorcycles is taken more and more seriously by the people.
摩托车的排放污染问题越来越受到人们的重视。
Serious PAHs pollution in the night may be produced by the diesel vehicle fuels and exhaust emissions.
研究结果同时显示夜间柴油车所产生的污染不容忽视。
Combustion chamber deposits increase exhaust emissions. Oils must be formulated to reduce such deposits.
燃烧室积碳提高了排气污染。机油必须被注入以减少这类沉积。
This paper describes the research how to reduce the exhaust emissions of B series diesel engine of Dongfeng Comins.
本文主要对东风康明斯B系列柴油机如何降低发动机尾气排放进行了研究。
The results of the dynamometer tests showed that the fuel economy and the reducing of exhaust emissions are improved obviously.
台架实验结果表明，采用该系统对于化油器发动机降低有害气体排放，提高燃油经济性有明显的改善。
The automobile exhaust is the main pollutant, in recent years, more and more city car, car exhaust emissions is a factor in fog.
汽车尾气是主要的污染物排放，近年来城市的汽车越来越多，排放的汽车尾气是雾霾的一个因素。
How to save energy and control the exhaust emissions while improving engine performance are the main topics people caring about.
同时，随着法规的逐渐严格，怎样在降低排放同时提高发动机的性能已经成为现在人们关心的最主要问题之一。
This paper briefly introduces a new lean combustion system which can effectively reduce fuel consumption rate and exhaust emissions.
简要介绍了一种新型的汽油机的稀薄燃烧系统，可以有效地降低燃油消耗率和废气排放。
Due to shortage of petroleum and enhancement of exhaust emissions standard, the substitute fuel engine has become more and more important.
随着石油的不断短缺及排放标准的提高，代用燃料发动机越来越受到重视。
This paper introduces the application of air supple device and three-way catalytic converter to reduce gasoline vehicle exhaust emissions.
本文探讨了化油器式汽油机采用电控补充二次空气加三元催化器控制排放的效果。
Haze is how to produce? Automobile exhaust emissions from industrial production, and firecrackers and so on all is the main cause of haze.
雾霾又是怎样产生的呢？汽车尾气，工业生产排放废气，和鞭炮等都是雾霾的主要来由。
Because of the rapid increase in motor vehicles, the problem of motor vehicle exhaust emissions has aroused more and more concern in China.
随着机动车保有量的快速增长，机动车污染物排放问题引起越来越多的关注。
After preparing sufficient biodiesel, the impact of the biodiesel on diesel engine exhaust emissions was evaluated and compared to diesel fuel.
为了了解生物柴油在发动机上的排放特性，进行了生物柴油和柴油的排放性能对比试验。
Diesel particulate Filter (DPF) is currently an effective and widely used approach to trap the particulate materials of diesel exhaust emissions.
对于柴油机微粒排放的控制，目前普遍采用的是柴油机微粒过滤器(DPF)，通过这种方式能除掉绝大部分的碳烟微粒。
To satisfy the more and more strict emission criterion, it is necessary to take measures to reduce the exhaust emissions of non-road diesel engine.
为了满足日益严格的排放标准，有必要采取有效的措施来降低非道路用柴油机的废气排放。
The measurements of exhaust emissions and smoke show that smokeless combustion can be basically realized by using pure methanol in the C. I. engine.
经过对废气和烟度的测量表明：发动机燃用纯甲醇基本上可以实现无烟燃烧。
The effects of different intake swirl ratio on the performances and exhaust emissions of diesel engine were investigated based on the experiment data.
试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。
The fuel an conserve energy, reduce the concentration of co, HC of exhaust emissions and the noise emission, so the environmental condition is improved.
验证了该燃料不仅节约能源，而且减少了废气排放中的CO、HC污染物，并降低了噪声。
This paper analyses the forming and effects of motorcycle. exhaust emissions, and points out the purifying approach of both in-engine and out-engine parts.
本文对摩托车排气污染物的形成、影响因素进行了分析，并指出了机内与机外净化措施。
Therefore, organic combination of the internal Purification and exhaust emissions after-treatment become the future solution methods of diesel exhaust emissions.
因此将机内净化和排气后处理有机的结合起来成为未来解决柴油车排放问题的主要技术手段。
The constant speed and full-load characteristics tests showed that the system had great potential to improve the engine economic performance and exhaust emissions.
通过对发动机进行的负荷特性和外特性对比试验结果表明，高压共轨电控喷油系统在提高发动机经济性和改善排放方面具有巨大潜力。
Road, also not crowded, not the automobile exhaust emissions, all with maglev instead of fuel combustion, thus "greenhouse effect" that a big problem also disappear.
道路上，也没有了拥挤，没有了汽车尾气的排放，全都用磁悬浮来代替燃料的燃烧，从而“温室效应”这一大难题也随之消失。
Fuels such as ethanol, bio-diesel to replace or partially substitute for conventional gasoline or diesel, can significantly reduce harmful automobile exhaust emissions.
如用燃料乙醇、生物柴油来替代或部分替代常规汽油或柴油，可大幅度减少汽车有害尾气排放量。
Maintain low emissions: Comma Motor Oils are friendly toward modern emission control systems, helping improve catalytic converter service life for low exhaust emissions.
维持低排放：满足主流发动机废气排放控制系统的配套要求，有利于提高催化转换器低废气排放的使用寿命。
There seems to be little concern among the car users for the environmental cost of such an explosion in exhaust emissions and the increased use of land for new highways.
而对于尾气排放量的激增对环境的影响，以及新的高速公路占用了更多的耕地，车主们似乎没怎么在意。
There seems to be little concern among the car users for the environmental cost of such an explosion in exhaust emissions and the increased use of land for new highways.
而对于尾气排放量的激增对环境的影响，以及新的高速公路占用了更多的耕地，车主们似乎没怎么在意。
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