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By analysing the hidden dangers of gas-fired boiler room in system of burning,leak of gas and system of steam-water,the paper presents some safety measures considered during designing of blast shelter,gas pipeline,aeration and fire controlling of boiler room,and advanced some prevention measures to realize the safety run.

从燃烧系统、燃气泄漏、汽—水系统三方面分析燃气锅炉房的安全隐患,提出工程设计时在抗爆卸压、燃气管道及通风与消防等方面应考虑的安全措施,并提出了预防锅炉房事故发生的值得注意的问

Along with energy crisis and worsened environment becoming more and more intensively, gas-vehicle receives the unprecedented recognition because of its less emissions, more economical and saving petroleum resource. The research and utilization of gas-vehicle develop quickly all over world. Of course, automotive fuel changing from gasoline and diesel into gas fuel is also carried out blazingly everywhere in our country.

中文题名燃气汽车发动机燃烧特性及工作性能研究副题名外文题名 Study on combustion characteristics and performances of automotive engine by gas fuel 论文作者詹樟松导师夏来庆教授学科专业动力机械及工程研究领域\研究方向学位级别博士学位授予单位浙江大学学位授予日期2001 论文页码总数132页关键词汽车发动机燃气汽车发动机燃烧馆藏号BSLW /2001 /U464 /32 随着能源危机和生态恶化日益严重,燃气(主要指压缩天然气和液化石油气)汽车以其优良的排放、良好的经济性以及能够部分替代紧张的石油资源而受到了空前重视,世界范围内燃气汽车的研究和应用也随之空前高涨。

Besides, the constraints such as the change rate of control variable are also considered.

其中包括:压气机喘振裕度限制,最高燃气温度限制,燃气发生器最高转速限制,动力涡轮最高转速限制,最大扭矩限制,燃烧富油熄火,贫油熄火限制等,另外还要考虑到工程实际中控制作用量的变化速率和变化幅度限制等约束条件。

Turbulent combustion phenomenon is natural and engineering one of the most common phenomenon.

湍流燃烧现象是自然和工程中最常见的现象之一。

All those studies show that the improved MFF model is a simple, accurate and appropriate carbon particle combustion theory model for engineering application.

这些研究表明,改进的MFF模型是一种简单、准确、适于工程应用的碳粒燃烧理论模型。

The study on modeling and programming of the responses of reinforced concrete structures in fires relates many fields such as combustion, heat transfer, engineering mechanical, engineering mathematics, finite element method, software engineering, computer graphics etc.

对钢筋混凝土结构在火灾中的反应进行数值模拟及软件开发,涉及到很多学科,包括燃烧学、传热学、工程力学、材料科学、工程数学、有限元技术、软件工程学。

As a new researching product, the novel two-stroke cycle micro free-piston swing engine, its research refers to internal combustion engine theory, combustion, hydromechanics, engineering thermodynamics, heat transfer theory, stand-fire material, mechanical design, and control engineer and so on. Many works have to be done on process of designing the new product.

新型二冲程微型摆式内燃机作为一种正在研究开发的产品,涉及了内燃机原理、燃烧学、流体力学、工程热力学、传热学、耐高温材料、机械设计以及控制工程等多门学科,在完善设计之前,有许多工作要做。

In other words, the results novelty broke the conclusion in the pervious reports that combustion synthesis can't occur once Fe content in Fe-Ti-C system is more than 60wt%, and gave more engineering meaning to combustion synthesis of iron-based composites.

而这正是本研究的创新点之一,即打破了前人研究所得出的"Fe-Ti-C体系中Fe含量超过60wt%就不能实现燃烧合成"的界限,从而使Fe-Ti-C体系燃烧合成制各铁基复合材料更具有工程意义。

Second, it accomplishes numerical computation at different ignition temperature and combustion time of different coal quality in calciner.

本文的特色在于:一方面,针对水泥分解炉工况,首次在国内系统而全面的研究了煤的燃烧特性及相关规律;另一方面,实现了分解炉内不同煤质的着火温度和燃尽时间的数值计算,从而使水泥分解炉内,煤的燃烧理论研究朝着工程应用的方向迈进。

In this dissertation, at first, the history and present situation of the research related to overheating is reviewed, and then the research works are carried out in following aspects the calculation of radiative properties of coal combustion, the solution of radiative transfer equation in absorbing-scattering media, the analyses of combined heat transfer processes in flue side, the computation method of steam temperature deviation of superheaters and reheaters and the inversion method of their wall metallic temperature in furnace, the numerical simulation of gas-solid two-phase flow, combustion and heat transfer in furnace, the measurement of outlet steam temperature of superheaters and reheaters, engineering reformation of overheating and optimum design of superheaters and reheaters, etc.

本文在综述了与过热器和再热器超温问题有关的研究历史与现状的基础上,在煤粉燃烧产物辐射特性的计算、含散射问题的辐射传递方程的求解、过热器和再热器烟气侧对流与辐射复合换热及汽温偏差的计算和炉内金属壁温的反演、炉内气固两相流动、燃烧、传热过程的数值模拟、过热器再热器炉外出口汽温的测量、过热器再热器超温问题的工程改造及设备的优化设计等方面进行了研究。

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Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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