residential use家庭用气residentialadj.住宅的；居住的residential mortgage securitization住房抵押贷款证券化residential electricity comsumption居民生活用电Residential district on slope field坡地住宅区Residential construction in Beijing北京住宅residential buildings in the future未来住宅residential'electricity consumptionresidential spatial differentiation居住空间分异Residential in ground swimming pool地面上住宅游泳池residential spatial differentiations居住空间分异residential central air conditioning户式中央空调