fine grinding短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 细磨 Based on the mineralized and mineralogical feature of magnesite in Iran, the paper sets forth the process of“ one fine grinding- positive floatation”for lower grade magnesite. 根据伊朗某地菱镁矿的成矿特性和矿石工艺矿物学特性，提出了低品位菱镁矿选矿脱硅“一次磨细-正浮选”的工艺。 dictall