在简介磨球、衬板磨损和失效的基础上，评述了国内外水泥工业管磨机所用磨球、衬板的常用材质。
Some general materials for the grinding balls and lining boards in ball mills of cement industry were reviewed.
本文由管磨机与球破机相关行业及其研究背景入手，说明课题的巨大研究价值。
The great research value of this subject is illustrated in this paper, based on the industry and its research background related to tube mill and ball crusher.
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