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。
2
The effect of coke intensity and granularity, volatilization components, ashes and reactivity on Imperial Smelting Furnace (ISF) have been discusses in detail.