钢是通过先加热后冷却来回火的。
两种采用中断淬火的特殊工艺也是回火的形式。
Two special processes using interrupted quenching are a form of tempering.
研究了试验载荷、滑动速度、对不同温度回火的45钢耐磨性的影响。
Effect of different experimental load and velocity on the wear resistance of 45 steel tempered at different temperatures has been studied.
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