从理论上分析了燃气管网气密性试验的方法、过程和影响因素，提出较为合理的方法。
The paper analyzes theoretically the method, process and influence factors in air pressure test. And some reasonable way are brought up in it.
氦泄漏试验作为一种致密性试验，它的检漏灵敏度远远超过了气密性试验和氨渗漏等试验方法。
As a seal test, sensitivity of helium leak test is higher than other test methods as gas seal and NH_3 leak test.
根据压力容器与安全泄放装置压力参数的配置关系，对可行的气密性试验方法和试验压力进行了讨论。
Based on the relationship between the designing pressure parameters of pressure vessel and that of safety devices, the feasible method and pressure of gas leak test were discussed.
新安装或大修后的氢气系统必须做耐压试验、清洗和气密性试验，符合有关的检验要求，才能投入使用。
After a new installation or maintenance for hydrogen system, pressure test, flushing and gastight test must be done.
论述了客车车室气密性和车用空调风量综合试验装置的原理。
The principle of a composite test device for airtightness of automobile compartments and air volume of air conditioners was described.
论述了客车车室气密性和车用空调风量综合试验装置的原理。
The principle of a composite test device for airtightness of automobile compartments and air volume of air conditioners was described.
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