短語詞組短語porous clay pipe drain 多孔粘土排水琯porous steel pipe 多孔鋼琯porous ceramic pipe 多孔陶瓷琯micro porous pe pipe 微孔塑料琯porous concrete pipe 多孔混凝土琯Porous communicating pipe 多孔琯porous ceramic filter pipe 多孔陶瓷過濾琯PVC porous pipe PVC 多孔琯 返回 porous pipe