短語詞組短語cooling tower duct bubbler 冷卻塔風筒cooling air duct 冷卻風管film cooling mixing duct 氣膜冷卻混合管cooling gas duct 冷卻氣管道cooling -air duct 冷卻風溝shield cooling duct 屏蔽冷卻管道shield -cooling duct 屏蔽冷卻管道air cooling duct 空氣冷卻風道cooling air outlet duct 冷卻空氣出氣管 返回 cooling duct