coal injection
短语词组
- coal strata injection 煤层注水
- coal powder injection equipment 高炉喷煤粉设备
- coal -injection duct 喷煤管
- coal seams injection 煤层注水
- coal mixed injection 混合煤喷吹
- coal oxygen injection lance 煤氧喷枪
- soft coal mixed injection 烟煤混喷
- coal powder injection [冶]喷煤
- coal seam injection 煤层注水 返回 coal injection