trimmer joist
英漢例句
- A joist is any of a series of small parallel beams supporting a floor or roof.
托梁是一系列的小列柱梁,用以支撐樓層或屋頂。 - The floor joist was cracked and fractured, but no debris was deposited in the basement, as the subflooring remained intact.
地板托梁破裂折斷,但是在地下室并未落下碎片因地板下面安然無(wú)恙。