YG6硬质合金与25 Cr3MoA合金钢真空钎焊和淬火工艺改进
YG6경질합금여25 Cr3MoA합금강진공천한화쉬화공예개진
Vacuum brazing and quenching technology improvement of hard alloy YG6 and alloy steel 25Cr3MoA
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