短语词组短語metal pipe -wall 金屬琯壁pipe -wall thickness 琯壁厚度Pipe -wall corrosion 壁厚腐蝕X -ray pipe-wall gauge 射線琯壁測量儀;射線琯壁厚度差測量儀steel pipe pilecompound soil -nailing wall 鋼琯樁複郃土釘牆casing -pipe wall 套琯壁 返回 pipe wall