1. To improve thermoresistance, weather resistance, water resistance, gloss, electric properties.
   提高耐热性能，耐候性能， 防水性能，光泽度，电性能。
2. At last, heat economy features of in-and-out dirt thermoresistance of air-cooling condenser heat sink pipe were calculated by programming.
   最后,编程计算分析了空冷凝汽器散热器管内外污垢热阻的热经济性特性。

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