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【单选题】
关于钢的淬透性和淬硬性,下面哪种说法是错误的?
A.
钢的淬透性好,其淬硬性一定很好
B.
钢的淬透性的衡量指标是深度
C.
钢的淬硬性的衡量指标是硬度
D.
钢的淬硬性主要取决于马氏体的含碳量
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