coal dressing
短语词组
- dry coal -dressing machine 干选机
- coal dressing waste water 选煤废水
- Coal Washing and Dressing 洗煤;煤炭洗选加工
- coal dressing device 选煤设备
- coal dressing methods 选煤方法
- coal dressing method 选煤方法
- dry coal dressing 干法选煤
- Coal dressing mechanism 选煤机理
- coal dressing flotation machine 选煤浮选机 返回 coal dressing