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air tightness of high speed train
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air tightness of high speed train
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高铁
释
air tightness of high speed train
高速列车气密性
在高速列车完成整备(即在安装厕所、供水系统、车窗和车门等之后)和关闭列车与外界相通的所有开孔(包括通过门和空调设备的开孔)状态下,车内压力相对车外压力变化的密封性能。
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