Finally the test results of vacuum tube operation are presented.

最后给出了电子管工作时的测试结果。

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This paper introduces the operational characteristics of the GEA Air Cooling Unit, and summarizes the basic method and relative operation of the vacuum leakage test of Air Cooling Units.

根据GEA空冷装置及机组运行特点，总结空冷机组真空严密性试验的基本方法和相关操作。

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Manifolds provide vacuum support for filtration of single, three or six test samples simultaneous. only single vacuum source can help manifolds to finish the whole operation.

多联过滤系统可同时进行多（单、三、六）个样品过滤，只需一个真空气源就可以完成全部操作，节省大量的时间，方便快捷。

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