短語詞組短語iron ore direct reduction 直接還原iron ore fines reduction 鉄鑛粉還原fe ore direct reduction 鉄鑛石直接還原cr ore smelting reduction 鉻鑛熔融還原fluid iron ore direct reduction 流化牀鉄鑛石直接還原fluid iron -ore direct reduction process 鉄鑛流化直接還原法Fluid Iron Ore Reduction 鉄鑛石流態(tài)化還原Phosphate ore reduction 磷鑛還原iron ore reduction 鋼鉄廠鉄鑛石還原 返回 ore reduction