强化喷丸工艺对20Cr2Ni4A材料渗碳淬火表面残余应力的影响
강화분환공예대20Cr2Ni4A재료삼탄쉬화표면잔여응력적영향
Influences of Strengthening Shot Blasting on the Surface Residual Stress After Carburizing and Quenching with 20Cr2Ni4A
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