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The application of compressed-air operation in shield construction of subway;

压气作业在地铁盾构施工中的应用

Optimization of well killing method for high pressure gas wells;

高压气井压井方法的优选

Application examples of gas logging parameters combined with drilling time in the well control of the high pressure gas well.;

气测录井参数结合钻时在高压气井井控中的应用实例

Thread sealing property in high temperature and high pressure gas wells is more important than that in oil wells.

高温高压气井对螺纹密封性的要求要比油井更为严格。

In order to study high pressure gas quenching process completely and exactly,the numerical model was established by use of the finite volume method to coupled compute gas velocity,temperature field of gas and workpiece and phase transformation inside workpiece during high pressure gas quenching process.

应用有限体积法建立了数学模型,对高压气淬过程中气体的速度场、气体和工件的温度场以及工件内部的组织场进行了耦合计算,针对一组小棒料高压气淬的模拟结果,分析了气体流动、工件温度与相变各自的影响因素以及它们之间的相互影响,指出几何模型准确建立的重要性。

low pressure vacuum carburizing and high pressure gas quenching,was adopted to ring gear of motors.

本文通过对轿车齿套的试验证明 ,采用低压真空渗碳 +高压气淬的热处理方法 ,可得到较小的变形 ,且具有环保、节能、无表面内氧化、生产率高等优点。

This article analyzes some main factors that decide the effect of high pressure gas quenching, introduces the development of international and domestic studies on high pressure gas quenching vacuum furnaces, and points out the major problems and the developing trend of domestic furnaces.

分析了影响真空高压气淬设备淬火效果的因素 ,介绍了真空高压气淬技术和设备的国内外研究情况 ,指出了目前国产设备存在的主要问题及今后一段时间的研究方

Load assignment optimization of compressor stations in gas transmission pipeline;

长距离输气管线压气站负荷优化调度

Operation Optimization of Long-Distance Natural Gas Transmission Pipelines and Compressor Stations Load Scheduling;

天然气长输管道运行优化及压气站负荷调度研究

For the system with a compressor station,the miscellaneous mathematical model,including the static and transient model was established with the solution obtained,and then the general operational practice was summarized.

分析了天然气长输管线系统的实际运行规律,建立了带压气站的长输管线静、动态混合数学模型,并对其进行求解,得出长输管线一般的运行规律。

The technological process design for large-scale gas compressor station of West-to-East Gas Pipeline Project is introduced.

介绍了西气东输天然气管道大型压气站的设计工艺过程 ,给出了压力站逻辑控制具体工作过程和压气站设计参数。

It has been studied that adaptability of pressured gasification of long flame coal in the pressurized fixed bed gasifier (ID 100mm) Due to the has strong caking a stirrer was installed when it carried pressured gasification.

研究了一种长焰煤的固定床加压气化适应性。

According to the problems discovered in running conditions of the coal-water slurry pressured gasification equipments, studies on perfection of the coal-water slurry pressured gasification technology.

根据近年来水煤浆加压气化装置运行中暴露出的问题及积累的经验，对该工艺技术的完善进行了探