供暖通风和空气调节系统 风管穿过防火隔墙、楼板和防火墙时穿越处风管上的防火阀、排烟防火阀两侧各 2m 范围内的风管耐火极限不满足规范要求 Template




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Try and sketch some of theseHod, Scientist, Chair, Wyvern, Cabin, Chimney, Chainmail, Crop, Cement Mixer, Crick, view more ideas


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tomski供暖通风和空气调节系统 风管穿过防火隔墙、楼板和防火墙时穿越处风管上的防火阀、排烟防火阀两侧各 2m coloring