nailing strip bracket
地板梁托
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地板托梁 Joist
地板托梁破裂折断，但是在地下室并未落下碎片因地板下面安然无恙。
The floor joist was cracked and fractured, but no debris was deposited in the basement, as the subflooring remained intact.
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角撑板一种三角形的金属托架，用来加固地板托梁。
A triangular metal bracket used to strengthen a joist.
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模块上移
模块下移
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