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。
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。
Blending technology with fashion, these green cars are committed to meet their demands for forceful motive power as well as for a substantial decrease in gas consumption and exhaust emissions.
这些设计时尚潮流而又充满科技智慧的绿色车型，不仅可以满足强劲动力需求，而且大幅度地减少了油耗和排放污染。
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。
During the combustion process of gasoline engine, adding some hydrogen partly has good effect on improvement of gasoline engine performance and reduction of exhaust emissions.
在汽油机的燃烧过程中加入部分的氢气进行燃烧，可对发动机的性能改善和废气排放物的降低起到良好作用。
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。
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。
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。
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。
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。
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。
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。
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。
For small non-road diesel engines, optimized matching among the fuel injection, in-cylinder air movement and the combustion chamber is an important means to reduce exhaust emissions.
对于中小型非道路用柴油机而言，优化油、气、燃烧室三者之间的匹配是降低尾气排放最重要的手段之一。
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。
During the process of transportation, fuel consumption and exhaust emissions is one of the major reasons of environmental pollution resulted from the logistics activities.
运输过程中的燃油消耗和尾气排放，是物流活动造成环境污染的主要原因之一。
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。
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。
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。
The results show that the motorcycle fuelled directly with vegetable gasoline can improve the economy and exhaust emissions without changing the structure of motorcycle.
试验结果表明，整车不作结构改动，直接燃用植物汽油能改善摩托车的经济性和排放特性。
The paper discussed adjustment of idling conditions of gasoline motor car influencing on exhaust emissions, proposed adjustable methods, had actual sense for improving exhaust emissions.
对汽油发动机怠速工况的调整、对排放的影响进行全面论述。并提出了具有可操作性的调整方法，对改善排放有实际意义。
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。
Adding detergent in gasoline can prevent fuel supply system and air intake system of gasoline engine from forming deposits, reduce exhaust emissions, and improve brake specific fuel consumption.
在汽油中添加清净剂可以防止汽油机燃料系统及进气系统沉积物的形成，减少排放污染，降低燃油消耗。
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。
The result shows that the length of the sampling pipe inserted into the vent-pipe and the vent-pipe's airproof are the key factors for the correct exhaust emissions results.
研究分析表明：尾气采样探头伸入排气尾管的长度及取样点前的测量管路密封性是保证测量结果正确性的主要因素。
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。
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。
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。
The experimental results have shown that exhaust emissions from two stroke motorcycle with the catalytic converter and feeding valve for secondary air have been reduced obviously .
试验表明：安装催化转化器和二次空气供给阀后的二冲程摩托车的排放有了明显的下降。
The experimental results have shown that exhaust emissions from two stroke motorcycle with the catalytic converter and feeding valve for secondary air have been reduced obviously .
试验表明：安装催化转化器和二次空气供给阀后的二冲程摩托车的排放有了明显的下降。
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