For HTLA steels, chromium is able to ().
A、increase hardeness of HTLA steels;
B、decrease toughness of HTLA steels;
C、decrease hardeness of HTLA steels;
D、increase toughness of HTLA steels
发布时间：2025-02-18 05:28:16
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答案：increase hardeness of HTLA steels ■decrease toughness of HTLA steels
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