Unverified78% confidenceDecision RuleTime unknown
穿墙排风若墙体外露端应加装防风雨帽（外墙罩），防止雨水、飞虫、鸟类进入管道；朝外风口需带百叶或防风倒灌结构
1
Sources
78%
Confidence
Long-term
Relevance
-
First Seen
Sources
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