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