手工生产这样一块金属片需要花费四天时间，如果使用机械设备则只需要10 - 15分钟。
It will take half a day to produce such a plate manually, 10-15 minutes - in case of mechanized equipment usage.
直接还原是一种以气体、液体燃料或非焦煤为能源，使用球团矿、块矿、粉矿在固态下进行还原生产金属铁的炼铁工艺技术。
Direct reduction is an iron smelting process for producing metallic iron using gas, liquid fuels and non-coke coal as energy to reduce pellets, lump ore and fine ore under solid state.
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