vacuum degree leak test
... 取样器 真空检漏器 吸气探针 sniffer 真空度检漏 vacuum degree leak test （真空规或检漏仪的）响应时间 Response time ...
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论述了真空接触器真空度运行检漏的必要性，并从理论上探讨漏气检测的机理。
This article discusses the necessity of air leakage detection to check the vacuum of the vacuum contactor in operation, and the mechanism of air leakage detection theoretically.
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