joisted ceiling搁栅吊顶
brick joisted砖木结构的
joisted floor搁栅搂盖
joist joisted托梁
joisted d ceiling搁栅吊顶
joisted d floor搁栅搂盖
double-joisted floor双层龙骨地板
N-COUNT（可数名词） 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