floor joist 楼板梁 ; 楼板搁栅 ; [建] 楼地板搁栅

timber floor joist 木楼板龙骨

derrick floor joist [油气] 钻台大梁

Adhesives for floor joist 地板隔栅用胶粘剂

large-size floor joist 楼板大龙骨

Second Story Floor Joist 第二层楼的地板搁栅

filler joist floor 加固搁栅楼板 ; 栏棚填料楼板 ; [建] 栏栅填料楼板 ; 加固放栅楼板

skip joist system floor 搁栅式楼板

joist floor 搁栅楼盖

open-web joist concrete floor 空腹小梁混凝土楼板