To improve thermoresistance, weather resistance, water resistance, gloss, electric properties.

提高耐热，耐候， 防水，光泽度，。

At last, heat economy features of in-and-out dirt thermoresistance of air-cooling condenser heat sink pipe were calculated by programming.

,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特。