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建筑排水通气系统
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建筑排水通气系统
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实验排水系统
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ventilation system
建筑排水通气系统
为使排水管道系统内空气流通,压力稳定,避免因管内压力波动使有毒有害气体进入室内而设置的与大气相通的管道。
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