发布时间:2025-01-27 13:16:48
商铺内有通风井怎么办,商铺里有通风井不可以敲,因为通风井也可能是承重结构。若设计得不好,可以采取通风井移位的方法,在通风口处接个PVC管,延伸至隐蔽之处。
Pioneer/先锋 SE-MJ721头戴式耳机 影音播放推荐
2025-01-27 13:16:48法兰hg47t205922009和din 2635的区别是什么
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