Connect vacuum hose to booster check valve.
连接真空软管到增压器检测阀。
In this paper the design, construction and check out of the vacuum line are presented.
介绍了真空排水系统的设计、施工及验收等有关注意事项。
The problems of the vacuum and its leak check are studied.
微小间隙抽真空以及真空检漏等应注意的问题进行探讨。
The problems of the vacuum and its leak check are studied.
微小间隙抽真空以及真空检漏等应注意的问题进行探讨。
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