pulverized coal injection短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 喷煤 Under high speed preheat in blast furnace and gasification in iron- bath for smelting reduction the pyrolysis of pulverized coal injection is the first important stage. 高炉喷吹煤粉和熔融还原铁浴粉煤气化等高速加热条件下,快速热分解是第一步。 cnki