residential use家庭用气residentialadj.住宅的；居住的residential building energy-saving住宅建筑节能residential mainstay and its function居民主体与作用residential-custodial care facility供身心不健全的人住宿的地方residential architectural planning of小区建筑计划residential energy-saving buildings居住节能建筑residential area in mountainous areas山区居民地RESIDENTIAL TELEPHONE IN HOME COUNTRYResidential Energy Saver Oil-Powered家用节能燃油热水器residential central air-conditioning户式中央空调Residential Group and Neighborly Space住宅组团与邻里空间