基于灰色系统理论的20CrMnTi晶粒扭压变形均匀化的研究
기우회색계통이론적20CrMnTi정립뉴압변형균균화적연구
Research of Pressure-torsion Forming for 20CrMnTi Grain Homogeneous Deformation Based on Grey Theory System
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