双列圆柱滚子轴承渗碳钢外圈二次淬火用压模
쌍렬원주곤자축승삼탄강외권이차쉬화용압모
Pressing Mould Used in Secondary Quenching for Outer Rings of Double Row Cylindrical Roller Bearings Made of Carburizing Steel
저자의 최근 논문