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介绍了大型磨机筒体、轴承、传动等几大部件新旧结构选材，通过新结构新材料的采用，提高了设备质量，减少了废品
Introduced a large mill cylinder, bearings, transmission and other major components of the new and old structure selection, through the new structure of new materials used to improve the quality of equipment and reduce waste