residential use家庭用气residentialadj.住宅的；居住的residential area and City Planning住区与城市规划residential community for the olds老年社区residential demand for electricity住宅用电需求residential communtiy construction小区建设residential spatial stratification居住空间分异residential land demand prediction住宅用地需求预测Residential acoustical environment人居声环境Residential address and phone no.家庭地址及联系电话。residential community dial exchange居民小区电话交换机residential electricity consumption居民用电