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1961—1968年国际标准化组织(简称“ISO”)先后分期公布了三项滚动轴承公差的推荐标准,即ISO/R492向心轴承公差、ISO/R577公制圆锥滚子轴承公差以及
1961-1968 the International Organization for Standardization (“ISO”) has released three recommended standards for rolling bearing tolerances, namely ISO / R492 radial bearing tolerances, ISO / R577 metric tapered roller bearing tolerances and