短语词组短语air -leakage detector 气密性检测仪zigzag air gap leakage 曲折气隙泄漏air system leakage rat 漏风率Air Conditioner Leakage 空调器漏电air syst leakage ratio 测风率Air heater leakage 空预器泄漏量 返回 air leakage