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fire damper
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fire damper
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防火分区
释
fire damper
防火阀
安装在通风、空气调节系统的送、回风管道上起隔烟阻火作用的阀门。平时呈开启状态,火灾时当管道内气体温度升高到一定温度时自动关闭,并在一定时间内满足漏风量和耐火完整性要求。
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irregular polymer
irregular prime
irregular prime number
irregular-rapid pulse
irregular rotation
Irregular sacrifice
irregular satellite
irregular set
irregular ship freight bill
irregular singularity
irregular singular point
irregular variable
irregular variable star
irregular variety
irregular wave
irrelevance
irrelevance of official capacity
irrelevant
irrelevant cost
irrelevant parameter
irresoluble
irresoluble equation
irreversibility
irreversible
irreversible cycle
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