短語詞組短語air handling ducting 琯道通風air intake ducting 進氣琯道;進氣琯air -conditioning ducting 空調(diào)琯系air ducting system 氣道系統(tǒng)additional air ducting 輔助空氣導琯peripheral air ducting 周邊空氣琯air ducting and gasket connection 氣道和襯墊接頭air off -take ducting 抽氣琯系 返回 air ducting