查询词典 combustion

Though the contents of trace elements in coal are very low, environment pollution caused by trace elements has been an inarguable fact At present, more researches lay particular stress on the occurrence during coal combustion, and several about coal gasification. The researches about trace elements in fluidized bed gasification are much less, saying nothing of pressurized fluidized bed gasification.

目前国内外研究更多的偏重于燃煤过程，对煤气化过程中微量元素迁移规律的研究较少，关于流化床气化炉型的文献更少，涉及加压煤气化过程中微量元素迁移规律的研究几乎没有。

Stable and even combustion temperature is one of important factors to decrease the emission of air pollutants from incineration system.

稳定均匀的燃烧温度是确保减少垃圾焚烧系统大气污染物排放量的一个重要因素。

The simulation results benefit the understanding of combustion process in the waste bed and the design of incinerator grates.

计算结果为研究垃圾在床层内燃烧过程的和炉排优化设计提供参考。

The paper studies their combustion characteristics , pollution characteristics in new model of rotary incinerator.

本文在新式焚烧炉中对它们的焚烧特性、污染特性进行了研究。

The incombustible residue,fused into an irregular lump,that remains after the combustion of coal.

炉渣，渣块不燃的余渣，熔凝成不规则团块，如煤燃烧后之剩余物

It was found that indene and naphthalene, which have harmful effects on the combustion property, were produced because of the hydrogen transfer reaction at high temperatures. High conversion ratio and low content of aromatics could not be obtained simultaneously.

在较高温度时，由于氢转移反应，产物中出现了茚、萘等低氢碳比化合物，会影响燃料的燃烧性能，应用时需要根据性能要求在高裂解转化率与低芳烃收率之间进行权衡。

ABSTRACT Development of internal combustion engine has been directed by energy saving and environment protection for a long time. Because lean burn technique has great potential to improve fuel consumption and emissions, it has been paid much attention. Variable induction and twice injection [patent no. 98107693. 9] , which have been developed in recent years, have also shown good effect on engine performance.

能源与环境现已成为内燃机技术发展的主导因素，稀薄燃烧由于其能够很好地改善发动机燃油经济性和排放特性而受到广泛重视；可变进气、二次喷油[专利号：98107693.9]等近年来发展起来的技术也表现出良好地改善发动机性能的能力。

Based on the former works by our group, the variable induction devices including swirl and tumble variable devices were developed and the variable induction and twice injection were combined to optimize the lean burn combustion and improve fuel consumption and emissions in this thesis.

本文在课题组前面研究工作的基础上，设计了可变涡流与可变滚流两种滑动式可变进气结构，并将可变进气与二次喷油结合起来优化稀薄燃烧过程，改进发动机经济性与排放性能。

Nitrogen is inert and will not support combustion; however, it is not life support ing.

氮是不活泼的，不支持燃烧；但是它不是维持生命的必要元素。

Nitrogen is inert and will not support combustion; however, it is not life supporting .

氮是不活泼的，不支持燃烧；但是它不是维持生命的必要元素。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。