防火圈是什么意思-防火圈的词语解释-相关组词-词语-近音词-同音词 - 掌上跨屏通词语词典

题目

更新时间：2025-03-01 19:35:01

求解答，词语防火圈是什么意思？再说说防火圈有什么含义？

答案

防火圈的百科含义

防火圈是由金属材料制作外壳，内填充阻燃膨胀芯材，套在硬聚氯乙烯管道外壁，固定在楼板或墙体部位，火灾发生时芯材受热迅速膨胀，挤压UPVC管道，在较短时间内封堵管道穿洞口，阻止火势沿洞口蔓延。

防火圈的词语组词

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防火圈的相关词语

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