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fire damper in smoke-venting system
释义
fire damper in smoke-venting system
Encyclopedia
工学
防排烟技术
释
fire damper in smoke-venting system
排烟防火阀
安装在机械排烟系统的管道上起隔烟阻火作用的阀门。平时呈开启状态,火灾时当排烟管道内烟气体温度达到280℃时关闭。
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Ru Long
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