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建筑节能是通过降低“建造能耗”和“使用能耗”的总能耗量而取得的。根据统计,建筑物年度的使用能耗远比年平均的建造能耗为多。在寒冷地区,用于房屋采暖的能耗占使用能耗中的大部分,因此,
Building energy efficiency is achieved by reducing the total energy consumption of “construction energy consumption” and “use energy consumption”. According to statistics, the annual energy consumption of buildings is much more than the average annual construction energy consumption. In cold regions, the energy used for house heating accounts for most of the energy used. Therefore,