短語詞組短語fresh air displacement ventilation 新風(fēng)置換通風(fēng)air exhausted ventilation 抽出式通風(fēng)blast air and ventilation 送排風(fēng)air change ventilation system 置換通風(fēng)系統(tǒng)air outlet ventilation 排氣通風(fēng)air inlet ventilation 進氣通風(fēng)night air -ventilation 夜間通風(fēng)air condition ventilation 空調(diào)通風(fēng)civil air defence ventilation 人防通風(fēng) 返回 air ventilation