查询词典 combustion

The fundamental characteristics for combustion temperature,reactivity,combustion performance,grindability and transportability were studied.

选用石油焦替代部分高炉喷吹用煤，并通过对其着火点、反应性、燃烧性能、可磨性及输送性能的系统研究发现，高炉喷吹石油焦可改善煤粉的燃烧性能、降低能耗。

It is clear that the coal combustion efficiency is significantly reduced if uncombustible material is dryly mixed with pulverized coal and the more the uncombustible material added the lower the coal combustion efficiency is.

试验表明，简单采用干粉混合的方法添加不可燃粉料恶化了煤粉的燃烧条件，随添加量增加影响加剧。添加粉料中，白云石粉对煤粉燃烧率影响最大。

An effective approach for utilizing low grade coals,fluidized bed combustion with flyash underbed recycle is recommended based on analyzing the state of the art of fluidized bed combustion.

针对国内外流化床燃烧技术发展现状，提出了飞灰循环底饲回燃利用劣质煤的有效途径。

The uniphase C with W/≤0.3 can be synthesized without being preheated. When W/ is higher than 0.3, the sample expansion increases with the increase of W content, the reaction between W and C is incomplete, the combustion products consist of W〓C, WC, TiC, C, and unreacted W. Preheating mixtures can accelerate the completion of the reaction among Ti, W, and C. The uniphase C with W/=0.4 can be synthesized by SHS at preheat temperature of 600℃. There are two kinds of powders with size of 2-4μm and size less than 1μm in the combustion products.

通过燃烧前沿激冷淬熄试验及产物形貌特征（燃烧块断面组织和产物多晶聚合体颗粒）分析，创新性地提出了两种体系的自蔓延高温反应机制。1熔化—溶解—析出机制：当燃烧温度较高时，燃烧前沿Ti粉熔化，W和C溶解于熔融Ti里，而后C从熔融里析出。2扩散—固溶机制：当燃烧温度不足以使燃烧前沿Ti粉熔化时，通过C的扩散先形成TiC层，其后C沿着热应力导致的TiC层裂纹继续扩散，与固态Ti核反应生成TiC；同时，C扩散至W颗粒，形成W〓C，而后通过C的继续扩散W〓C转变成WC；与此同时，WC固溶至TiC里，形成C固溶体。

Based on the principles of stepped firing in recirculation zones, several new type straightjet and revolving-pour burners are designed and manufactured which used for different power boilers and industral furnaces with combustion of pulverized coal, poor-gas or fuel-oil. The burners are tested and improved in practice and good results are finally achieced in variant degrees including strenthening flame stability, adapting to boiler capacities and rank of coal, raising combustion and heat transfer efficiency, and lowering the temperature of weste gas at the boiler tail.

应用回流区分级着火原理，设计和制造了几种不同结构型式的直流、旋流新型燃烧器，用于燃煤粉、煤气、油雾的不同类型的锅炉和工业炉，在实践中进行试验和改进，最终都在不同程度上取得了强化稳定燃烧、适应负荷和燃料品质变化、提高燃烧和传热效率、降低炉尾烟温的好效果。

By analyzing the double meaning of the effect mechanism of water on the oxida tion and spontaneous combustion of residual coal in goaf, and through investigat ion of the results both in laboratory and field practice, it is confirmed that w ater pouring, which is suggested by authors, is a new, economic, efficient and e asytooperate measure for controlling the spontaneous combustion of the resid ua l coal in goaf.

通过对水在采空区遗煤氧化及自燃的作用机理两重性的分析以及实验室试验与现场应用实际效果研究，证实了笔者提出的清水灌注措施是一种新的、经济有效的、操作简便的防治采空区遗煤自燃的技术措施。

And differences among cokes combustion characteristics were presented. Analysis on relationship between caking property and combustion characteristics parameters was finished.

对其燃烧特性进行比较，分析了粘结性与各燃烧特征参数之间的关系。

For Diesel/Gas dual-fuel engine, commixing combustion of gas fuel and diesel in cylinder results in some problems, as economical performance and emissions of engine become worse at light load and knocking combustion at heavy load and so on.

由于柴油和气体燃料的不同物化和燃烧特性，给双燃料发动机带来一些问题，如小负荷时发动机的经济性和排放不好，大负荷工况下易爆震等。

The nature of coupling between combustion and fracture are twofold in the convecting combustion process of crack cavity. On the macroscopic scale; the coupling appears as the energy and mass transforming between the solid phase of the cracked body the gas phase of the flow field. On the microscopic scale, the coupling induces the evolution of the microstructures, which leads to degradation of mechanical properties of solid materials.

从燃烧断裂耦合的内在形式来看，包括两大方面的内容：在宏观表象上，表现为在含能材料裂纹的对流燃烧过程中，固相裂纹体和对流燃烧流场之间的质能交换形式的热力耦合；在微细观运动方面，热和力的作用诱发固体材料微细观运动和组分、结构的变化，最终改变固体材料的宏观力学性能，表现为固体材料的热力损伤过程。

Under different combustion pressuring rates of the solid motor, the relations among the convecting combustion flow characteristics, especial the pattern of flame spreading, and the variation of stress intensity factor at the crack tip are discussed in detail.

文中详细描述了在固体火箭发动机燃烧室环境中，药柱裂纹对流燃烧流场特性和固相裂纹体变形特性；燃烧室增压率对裂纹中火焰传播方式的影响；燃烧室增压率、燃烧室平衡压力的设计值、药柱裂纹径向长度对固相裂纹尖端应力强度因子、燃烧室压力的影响。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。