Improvement on Design of Curvature Radius of Sphere Surface on Big Rib for Tapered Roller Bearings or Spherical Thrust Roller Bearings是什么意思_Improvement on Design of Curvature Radius of Sphere Surface on Big Rib for Tapered Roller Bearings or Spherical Thrust Roller Bearings在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句