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来源:雅诚德英语网
One of causes that ore-dressing experiments of Ningxiang-type iron ore hasn t got breakthrough is insufficient study of technological mineralogy of ore.
宁乡式铁矿选矿试验未获重大突破的原因之一是对矿石的工艺矿物学研究不够充分。
One of causes that ore-dressing experiments of Ningxiang-type iron ore hasn t got breakthrough is insufficient study of technological mineralogy of ore.
宁乡式铁矿选矿试验未获重大突破的原因之一是对矿石的工艺矿物学研究不够充分。