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Noise suppression and odour filtration device for a ventilation and ventilation valve for sewage pipes
Noise suppression and odour filtration device for a ventilation and ventilation valve for sewage pipes
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机译:排污管通风换气阀的降噪除臭装置
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摘要
Noise suppression and odour filtration device for a ventilation and ventilation valve for sewage pipes, characterized by a flexible hose (3) filled with activated carbon (6).
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