单词preparator
n.: 选矿机
网络: 制作标本人员；造矿机；场地整理机
选矿机
Practice of decreasing medium consumption in heavy medium preparator
重介选煤厂降低介质消耗的实践
Application of super rust - eliminator in preparator
超强除铁器在选煤厂的应用
Technical reformation plan of Cha zhuang Coal Mine preparator
查庄煤矿选煤厂技术改造方案
The practice of dust treatment in preparator
选煤厂粉尘治理实践