• 1. cold region engineering: 寒区工程
• 2. engineering in cold region: 寒区工程

• 1.Based on an engineering example of office building in hot summer and cold winter region, using the method of calculating, energy-saving design of roof insulation calculation is made in this paper.
  通过一个夏热冬冷地区办公建筑的工程实例，采用节能计算的方法对其屋顶的保温隔热构造进行节能设计。
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