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直接还原铁
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直接还原铁
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直接还原炼铁法
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direct-reduction iron
直接还原铁
以铁矿石块矿或精矿粉球团为原料,在低于炉料熔点的温度下,以气体(CO、H2)或固体炭(煤或焦炭)做还原剂,以直接还原法生产的金属铁产品。
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grassland biohazard
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grassland classification in China
grassland classification in the Soviet Union
grassland class map
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grassland degradation and restoration mechanism and grassland health evaluation in northern China
grassland degradation in China
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Grassland Eco-chemistry
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grassland ecological-economic regions in China
grassland ecological risk
grassland ecological security
grassland ecological subsidy policy
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grassland ecological value accounting
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