The inventor Henry Bessemer discovered that directing a blast of air at melted iron in a furnace would burn out the impurities that made the iron brittle.
发明家亨利·贝塞默发现，在熔炉里对铁水直接吹一吹气，就会烧掉使铁变脆的杂质。
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Pass splendid specimens of Anglo Norman architecture, pass pedestrians and pederasts, open hearth furnaces, basic Bessemer mills, dynamos and transformers, pig iron castings and steel ingots.
Bessemer process: technique for converting pig iron to steel invented by Henry Bessemer in England in1856and brought by him into commercial production in1860.