floor joists spacing是什么意思

网络释义

1)floor joists spacing,楼板搁栅间距2)floor joist,楼板搁栅3)bay of joint,搁栅间距4)floor joist,楼地板搁栅5)skip joist system floor,搁栅式楼板6)open floor,露明搁栅楼板