深层天然气地层测试难度大，主要是井底温度高、井底压力大、井身结构复杂，同时受有害气体影响。

It is very difficult to make tests in deep natural gas formation because of high temperature at the bottom of Wells, great pressure, complex well structure as well as the influence of hazards gas.

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本论文完成的工作包括便携式列车管气体压力测试仪的硬件设计与软件开发。

This paper presents a process of a "Portable Testing Instrument for Train Brake Pipe Gas Pressure", including hardware design and software development.

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本文设计了一种基于干式测漏法(直接压力测试法)结合89c58单片机技术的气体测漏仪。

An air leak detector based on the technique of dry leakage detecting (air pressure decay) and 89c58 single chip microcomputer is designed in this paper.

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