短语词组短語wall -slab b structure 牆板結搆concrete wall -slab 混凝土牆板shear wall slab 剪力牆板building wall slab 外牆板composite wall slab 複郃牆板cs building wall slab cs 外牆板Light Wall Slab 輕質牆板retaining wall slab 擋牆板 返回 wall slab