謝謝瞎琢磨不敢當。是說三角形斜邊。導軌上方用木方和drywall補到與天花板齊，木方下麵裝導軌。

來源: IEbird 於 2024-04-06 17:55:20 [舊帖] [給我悄悄話] 本文已被閱讀：次

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