The great inventions of that century-the steam engine, mechanical spinning, smelting iron with coke-all served to economise on the expensive factor of production and use more of the cheaper one.
那个世纪的伟大发明如蒸汽机，机械纺纱机，焦炭炼铁大大的节省了高额生产成本，使其更为低廉。
The effect of coke intensity and granularity, volatilization components, ashes and reactivity on Imperial Smelting Furnace (ISF) have been discusses in detail.
详细分析焦炭强度、块度、灰份、挥发分、反应性对铅锌密闭鼓风炉生产的影响，为鼓风炉生产提供一定的指导。
I have the impression that blASt furnace smelting USES coke. It must be used AS fuel.
我有一个印象。高炉冶炼要用焦炭。这一定是用作燃料的吧。
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