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防烟楼梯间
释义
防烟楼梯间
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疏散楼梯间
释
smoke-proof staircase
防烟楼梯间
为防止火灾时烟和热气进入,在入口处设有防烟的前室、敞开式阳台或凹廊(统称为前室)等设施的楼梯间。通向前室和楼梯间的门均为乙级防火门,以防止火灾时的烟和热气进入的楼梯间。
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seals made by Wen Peng
seals made by Zhao Zhiqian
Seals Office
seals of fluid machinery
seals of the Warring States Period
seal up
seal wear
seam
seaman
Seaman's Book
seamanship
sea manure
sea map publishing
sea map update
seam-burnt edition
Sea-Mirror of Circle Measurement
sea mite
seamless
seamless depth datum
seamless editing
seamless steel pipe for liquid service
seamless track
seamless tube
seamless underwear circular knitting machine
seamount
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