filler joists 加固搁栅 ; 加固放栅
steel joists 钢梁
Joists of metal 金属搁栅
floor joists spacing 楼板搁栅间距
Floor Joists 地板搁栅
space between joists 搁栅空当
two-way joists 双向龙骨
floor joists acing 楼板搁栅间距
N-COUNT Joists are long thick pieces of metal, wood, or concrete that form part of the structure of a building, usually to support a floor or ceiling. 托梁
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