片语
internal drainage layer内部排水层
pervious drainage layer多孔排水层
sand filled drainage layer排水砂垫层
leachate drainage layer渗滤污水排水层
With the drainage layer同层排水
drainage protected layer排水保护层
radial drainage layer横向排水层
drainage protective layer排水保护层
drainage blanket疏水层,排水层;排水砂层
drainage cushion layer排水垫层