许多新房子用的engineering joist 是2X3与OSB三明治, 我的起码还是2X8实木，但我家没有钢梁

来源: 移花接木于 2017-09-13 15:20:02 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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