powder coal injection的用法和樣例：
例句
- According to the multi-flow theory, a mathematical model of coal injection of BF has been developed.
基於湍流兩相流理論建立了高爐噴煤兩相流動及傳質三維數學模型。 - The effects on slag viscosity caused by unburned pulverized coal during the process of injecting pulverized coal are presented.
在實驗室條件下研究了高爐大噴煤中未燃煤粉對爐渣粘度等性能的影響。
