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flame hardening英英字典_flame hardening剑桥英语解释_flame hardening柯林斯英文解释_果味酸柯林斯词典
果味酸柯林斯词典

flame hardening

F 开头单词

柯林斯词典

    flame hardening

  • 1. N the surface hardening of ferrous metals by heating the metal with an oxyacetylene flame followed by rapid cooling 火焰淬火[engineering]

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