将钢件加热到与淬火时相同的温度后，再保温一定时间，然后在炉内或埋入导热性差的介质中缓慢冷却下来的过程叫做（）。_货车检车员高级工_全学科试题题库

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将钢件加热到与淬火时相同的温度后，再保温一定时间，然后在炉内或埋入导热性差的介质中缓慢冷却下来的过程叫做（）。
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