回火钢 meaning in Chinese

tempered steel
tempering steel

Normalized and tempered steel
正火及回火钢
Quenched and tempered steels - technical delivery conditions for boron steels
淬火钢和回火钢.第3部分:硼钢的交付技术状态
Quenched and tempered steels - technical delivery conditions for special steels
淬硬钢和回火钢.第1部分:特种钢供货技术条件
Quanched and tempered steels . part 3 : technical delivery conditions for boron steels
淬火钢和回火钢.第3部分:硼钢的交货技术条件
Bright steel products - technical delivery conditions - steels for quenching and tempering
光亮钢产品.技术交付条件.淬火和回火钢

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