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阐述了旧房墙体节能改造的必要性，分析了改造后建筑使用期间内出现保温失效的各种原因，就解决问题的方法进行了探讨。
The necessity of the energy-saving renovation of the old house wall is described, and the causes of the insulation failure during the period of the building after the transformation are analyzed, and the methods for solving the problems are discussed.