The good effect has been gained on the hypereutectic Al Si alloys treated with some double refining and modifying agents such as P, S, RE, Sr, Na, C, etc.
采用磷、硫、稀土、锶、钠、碳等进行双重细化变质处理过共晶铝硅合金已取得了良好的效果。
Double metal rolling fin tubes are widely used in refining, chemical, power plant and many other industries because they have good heat transfer, mechanical, anti-corrosion performance.
双金属轧制翅片管以其优良的传热性能、机械性能和耐腐蚀性能在许多工业领域，特别是炼油、化工、发电行业得到了广泛应用。
Double metal rolling fin tubes are widely used in refining, chemical, power plant and many other industries because they have good heat transfer, mechanical, anti-corrosion performance.
双金属轧制翅片管以其优良的传热性能、机械性能和耐腐蚀性能在许多工业领域，特别是炼油、化工、发电行业得到了广泛应用。
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