短語(yǔ)詞組短語(yǔ)bare -tube wall 光管水冷壁stainless steel bare tube 不銹鋼光管bare tube wall 光管管壁Bare Tube Economizer 光管式省煤器bare tube type economizer 光管式省煤器bare tube furnace 光管水冷壁爐膛bare tube transfer area 裸管換熱面積 返回 bare tube