在真空排气系统中，必须引蒸汽到汽轮机主轴迷宫式密封，以防真空损失。
In a vacuum exhaust system, sealing steam to the turbine shaft labyrinth seals must be admitted to avoid loss of vacuum.
如果排气系统处于真空下，必须在打开排气阀后，逐渐引蒸汽来加热壳体。
If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.
研制开发了高真空排气过程微机实时控制系统，并对该系统的硬件构成和软件开发作了介绍。
Constant POwer control rule is also presented. The hardware and software in the microcomputer real-time high-vacuum exhausting system is introduced.
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