查询词典 combustion

The fatigue reliability analysis for the 16V240ZJB diesel engine crankshaft inserving DF4B internal-combustion locomotive were carried out in thisdissertation.Firstly,according to the fatigue loads of the crankshaft,the bendstress and torsion stress at danger zone in rated operation modes werecalculated respectively.The stress randomicity of the crankshaft was analyzedrelating operation modes of acceptance,and the probability distribution ofstresses were obtained with statistical analysis.

运用本文所提出的疲劳可靠性分析模型(干涉模型-Miner准则综合法及弯扭复合模型)和经分析简化得到的材料p-S-N曲线和p-Sa-Sm-N曲面，分别按一维、二维疲劳应力及弯扭复合应力三种情况对东风4B型内燃机车16V240ZJB柴油机曲轴进行了疲劳可靠性分析。

An acetylene torch reaches about 6,000 F (3,300 C), hotter than combustion of any other known gas mixture.

乙炔氧焰最高可达到火焰温度6，000℉(3，300℃)，比所有已知可燃混合气体都高。

Based on the acoustic absorption theory of microperforated panel and by the means of the theoretical analysis and emulation, the paper focuses on the acoustic characteristic including acoustic impedance, frequency and acoustic absorption coefficient of microperrforated panel working in the combustion chamber which has high temperature and great temperature gradient.

摘要根据微穿孔板吸声理论，采用理论分析和仿真的方法，着重讨论微穿孔板在温度梯度下的声阻抗、共振频率和吸声系数等声学特性，分析其受温度影响变化的机理。

Coupling between combustion oscillations and acoustic pressure oscillations can lead to largeamplitude pressure oscillations within the combustor.

耦合振动和燃烧声压的振荡可能导致largeamplitude压力振荡的燃烧室。

Since a combustion means is also used, there is no possibility of the maximum pressure dropping during actuation.

由于还使用一种燃烧剂，因此，不存在启动期间最大压力降低的情况。

Factors, such as functional additive for internal combustion engine, blending temperature, distillation range of base oil and the complex ratio of antifoaming agent, affect the foaming performance are highlighted.

报道不同种类抗泡剂在不同润滑油中的泡沫特性，重点介绍了内燃机油功能添加剂、油品调合温度、基础油馏分组成、抗泡剂复合比例等对油品泡沫特性的影响。

An engine cyclic variation model has been built by using the residual gas temperature for the n-th cycle as the input of the model, through constant pressure intake process, adiabatic compression process, constant volume combustion process, adiabatic expansion process, adiabatic blow down process and constant pressure exhaust process to approximate the thermodynamic processes in the cylinder, finally the residual gas temperature for the (n+1)-th cycle can be estimated.

基于循环间变动的排气温度建立了一个发动机循环变动模型。在这个模型中，第n个循环的排气温度作为模型的输入，通过定压进气过程、绝热压缩过程、定容燃烧过程、绝热膨胀过程、定容放热过程和定压排气过程来近似汽缸内的热力学过程，最后得出第n+1个循环的排气温度。

The combustion and flow in the motor and nozzle is adiabatic , that is, no heat loss occurs to the surroundings.

燃烧和流动的汽车和喷嘴是绝热，即是没有热损失的发生环境。

Its legal mechanism is to be the combustion-supporter, adjuster and protector to technology advancement, economy increasing and social development.

知识产权的激励、调节、规范和保障作用使它成为技术进步、经济增长和社会发展的助燃剂、调节器和保护神。

The influence of volatile content and admix ratio upon combustion performance of blended coal has been preliminarily analysed, it is suggusted that the equivalent volatile content value can be used as important basis for determining operational parameters during the time of burning blended coal.

采用热天平和一维火焰炉对单一煤及其混煤的着火、燃烧、燃尽以及结渣特性等进行了试验研究，初步分析了挥发分含量及掺配比对混煤燃烧性能的影响，提出等效挥发分值可作为混煤燃烧时确定运行参数的重要依据。

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。