... 发火合金：pyrophoric alloy 二重精炼：double refining 二重回火：double tempering ...
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double-refining 再精制
double solvent refining 双溶剂精炼
double refining pre-treatment 双细化预处理
·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
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