12Cr-4Ni-3Mo-V-Nb-N叶片钢高频淬火后回火硬化现象
12Cr-4Ni-3Mo-V-Nb-N협편강고빈쉬화후회화경화현상
Secondary Hardening of 12Cr-4Ni-3Mo-V-Nb-N Steel after High Frequency Quenching and Tempering
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