許多新房子用的engineering joist 是2X3與OSB三明治, 我的起碼還是2X8實木，但我家沒有鋼梁

來源: 移花接木於 2017-09-13 15:20:02 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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