[KongchangAI]
Unverified85% confidenceSolutionTime unknown

选购前先量准三个数据:油烟机出风口内径、公共烟道墙孔内径、两者间直线与弯折距离;据此确定管径(通常150mm)、变径转接头是否需要、直管+弯头数量,再匹配材质,最后确定止逆阀方案

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