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许多年前，人们初次在火中锻烧矿石。
Many years ago men first heated iron ore in a fire.
youdao
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试验结果表明，组合式烧嘴能满足锻烧水泥工艺生产的要求。
It is shown that the combined burner could meet the demand of cement calcining.
youdao
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试验结果表明，组合式烧嘴能满足锻烧水泥工艺生产的要求。
It is shown that the combined burner could meet the demand of cement calcining.
youdao