porous Ti多孔钛porousadj.可渗透的；多孔的porous plastics多孔塑料porous riverbed多孔质河床porous metal Mg多孔金属Mgporous Al alloy多孔铝合金porous silicone多孔硅泡沫porous diffusor多孔扩散消声器porous membrane多孔薄膜,多孔性膜porous ceramics多孔性陶瓷porous gradient孔梯度porous pavement透水路面