[KongchangAI]
Unverified80% confidenceSolutionTime unknown

新风或长距离排风的完整方案:管径匹配→按管长和弯头数计算所需静压→选混流/管道离心风机→加装消音软管降噪→末端配止逆阀防倒灌

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80%
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Long-term
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