短语词组短語box -type heater 箱式加熱器convection box type heater 菸氣下行式對流箱式爐vertical box type heater 立式箱型爐down -convection box type heater 菸氣下行式對流箱式爐;菸道氣下行對流箱式加熱爐 返回 box type heater