短語詞組短語Gas pressure welding 加壓氣焊;氣焰壓接;氣壓焊接gas pressure welding machine 氣壓焊接機gas pressure welding method 加壓氣焊法intelligent gas pressure welding 智能型氣壓焊gas pressure welding joint 氣壓焊接頭open butt gas pressure welding 開式加壓氣焊;開式增大壓力氣兒焊closed butt gas pressure welding 閉式加壓氣焊joint after gas pressure welding 氣壓焊接頭gas pressure welding of rail 鋼軌氣壓焊 返回 pressure gas welding