针对不同类型的空气-空气热回收器，介绍了严寒地区冬季热回收器预防霜冻的几种措施及其融霜方法。
The article introduced several measures to prevent frost and melt it for in cold winter for different types of air-air heat reclaiming device.
针对不同类型的空气-空气热回收器，介绍了严寒地区冬季热回收器预防霜冻的几种措施及其融霜方法。
The article introduced several measures to prevent frost and melt it for in cold winter for different types of air-air heat reclaiming device.
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