joist 硬木毛地面 hard-wood rough flooring 企口板地面 tongued and grooved flooring 防酸地面 acid-resistant floor 钢筋混凝土楼板 reinforced concrete slab (R.C Slab) 乙烯基地面 vinyl flooring 水磨石嵌条 divider strip for terrazzo 地面做 2%坡 floor with 2% slope 集水沟 gully 集水口 gulley 排水沟 ...