Unverified85% confidenceTradeoffTime unknown
PVC硬管排烟效率和密封性优于铝箔软管，但施工需切割和胶粘、无法适应复杂拐角；铝箔软管安装灵活但内壁褶皱易积油、长期使用风阻增大
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
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