短語詞組短語air handling ducting 琯道通風(fēng)air intake ducting 進(jìn)氣琯道;進(jìn)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(dǎo)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