GCr15SiMn钢制特大型圆锥套圈油沟淬火裂纹的预防
GCr15SiMn강제특대형원추투권유구쉬화렬문적예방
Prevention of Quenching Crack in Rings Oil Groove of Large-scale Tapered Bearing Rings Made of Steel GCr15SiMn
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