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trimmer joist的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
Noun:
-
joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.
trimmer joist的用法和樣例：
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。
