短語詞組短語porous clay pipe drain 多孔粘土排水管porous steel pipe 多孔鋼管porous ceramic pipe 多孔陶瓷管micro porous pe pipe 微孔塑料管porous concrete pipe 多孔混凝土管Porous communicating pipe 多孔管porous ceramic filter pipe 多孔陶瓷過濾管PVC porous pipe PVC 多孔管 返回 porous pipe