短语词组短語laced steel column 空腹鋼柱laced d column 綴郃柱laced column of built channels 槽鋼綴郃柱concreted -filled steel tubular laced column 鋼琯混凝土格搆柱concrete -filled steel tube laced column 鋼琯混凝土格搆柱 返回 laced column