Aluminum titanate is an excellent inorganic non-metal material with high melting point and low expansion.
钛酸铝是一种优异的高熔点、低膨胀无机非金属材料。
High F iron concentrate at Baotou Steelworks contains higher alkali metal. The oxidized pellets produced with it are severe in reduction expansion and low in reduction intensity.
包钢高F铁精矿含有较高的碱金属，生产的氧化球团还原膨胀严重，还原强度很低。
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