gas tightness

In recent years part of domestic oil and gas fields proposed the requirements on gas tightness test for individual high-pressure shaftmouth device.

近年来我国部分油气田因开采情况的变化，相继对各高压上井装置提出了进行气密封试验的要求。

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It afford the reference data for the experimental research of adding inorganic in foam and gas tightness of foam. And it afford the theory evidence for rapidly closure of air leakage channel in mine and closed fire district.

为泡沫进行添加无机物和泡沫的气密性等其他特性试验研究提供参考数据，为煤矿井下漏风通道的快速封堵或火区巷道的快速封堵技术提供理论依据。

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Test and Research on Gas Tightness of the CA Storage Room

气调冷库气密性的试验研究

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The main influence factors which influence the accurate determination of nitrogen content of coal are introduced, and these influence factors including uhe temperature of assimilation, confection of reagent and gas tightness of device are pointed out in this paper too.

分析了在氮含量测定过程中直接影响测定结果准确性的几个主要因素，即消化反应的温度、试剂的配制和装置的气密性等。

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On Some Disputing Points of Pressure Vessels in Pressure Proof Tests The Design and Study of Bearing Pressure Capability and Gas Tightness Checking System

压力容器耐压试验中几个有争议的问题述评耐压及气密性试验系统的研制

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By means of analyzing the solubility and solubility rate of gas in water, and making application of double-film theory and Fick's law, the solubility rate of nitrogen in water is theoretically calculated in gas tightness test.

通过对气体在水中溶解度和溶解速率的分析，应用气体溶解速率的双膜理论和气体扩散的菲克定律，从理论上计算出气密性试验中的氮气在水中的溶解速率。

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Theoretic Time Curve Calculation in Pipeline Gas Tightness Test

燃气管道气密性试验打压时间曲线的理论计算

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A series of gas tightness test was examined for the gas tightness ensurance of the test bed.

之后进行了一系列的气体密封性实验，以考察实验台的密封性能。

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