序号 项目编码 项目名称 单位 数量 1 030212002001 线槽 1.材质:金属线槽 2.规格:200*100 3.安装位置 :吊顶 m 167.54 2 030212002002 线槽 1.材质:金属线槽 2.规格:100*50 3.安装位置 :吊顶 m 34.2 3 030212002003 线槽 1.材质:金属线槽 2.规格:400*100 3.安装位置 :吊顶 m 20.96 4 030212002004 线槽 1.材质:金属线槽 2.规格:100*100 3.安装位置 :吊顶 m 44.97 5 030212002005 线槽 1.材质:金属线槽 2.规格:150*100 3.安装位置 :吊顶 m 0.9 6 030208001001 电力电缆 1.型号、规格 :YJV-3*10 3.敷设方式 :线槽 m 4.46 7 030208001
Air Conditioning Systems Air conditioning has rapidly grown over the past 50 years, from a luxury to a standard system included in most residential and commercial buildings. In 1970, 36% of residences in the U.S. were either fully air conditioned or utilized a room air conditioner for cooling (Blue, et al., 1979). By 1997, this number had more than doubled to 77%, and that year also marked the