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.
是指用于蒸汽系统、蒸汽管道，用来控制蒸汽的开关的电磁阀，采用硬密封或者四氟软密封，能耐高温。
Steam solenoid valve is used for steam system, steam piping, solenoid valve used to control the steam, the seal or PTFE soft seal, high temperature.
是指用于蒸汽系统、蒸汽管道，用来控制蒸汽的开关的电磁阀，采用硬密封或者四氟软密封，能耐高温。
Steam solenoid valve is used for steam system, steam piping, solenoid valve used to control the steam, the seal or PTFE soft seal, high temperature.
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