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15 2020-06 I Abstract: (1) the roundness of the shaft and hole and vertical shoulder according to the corresponding precision beari... 17 2017-06 The influence of high speed motorized spindle on CNC machine tools and metal cutting technology 16 2017-06 Abstract: in order to do a good job in the research and development of the national bearing technology and equipment, th... 16 2017-06 Abstract: in order to do a good job in the research and development of the national bearing technology and equipment, th... |