短語詞組短語iron ore direct reduction 直接還原iron ore fines reduction 鐵礦粉還原fe ore direct reduction 鐵礦石直接還原cr ore smelting reduction 鉻礦熔融還原fluid iron ore direct reduction 流化床鐵礦石直接還原fluid iron -ore direct reduction process 鐵礦流化直接還原法Fluid Iron Ore Reduction 鐵礦石流態(tài)化還原Phosphate ore reduction 磷礦還原iron ore reduction 鋼鐵廠鐵礦石還原 返回 ore reduction