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大于50米的公建的防烟楼梯用敞开阳台做独立前室,还用设机械加压送风系统么?

大于50米的公建的防烟楼梯用敞开阳台做独立前室,前室还用设机械加压送风系统么?怎么设呢?

yjjzok | 2021-07-07 11:43
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