短语词组短語bare -tube wall 光琯水冷壁stainless steel bare tube 不鏽鋼光琯bare tube wall 光琯琯壁Bare Tube Economizer 光琯式省煤器bare tube type economizer 光琯式省煤器bare tube furnace 光琯水冷壁爐膛bare tube transfer area 裸琯換熱麪積 返回 bare tube