Railway equipment in general . tolerancing of metal pieces . permissbiles deviations of dimensions with non tolerance indication . allowance for machining 铁路通用设备.金属零部件的公差.未标明公差的尺寸的允许偏差.机加工余量
2.
Railway equipment in general . tolerancing of pieces . usuals grad of precision realizable according to the manufacturing processes . allowance for machining 铁路通用设备.零部件公差.根据制造工艺可实现的精度的普通等级.机加工余量