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17 окт 1856 г. - Age of steel

Описание:

Bessemer process - improved efficiency of steel production.
used a blast of hot air to purify molten iron and convert it to steel.

Добавлено на ленту времени:

andres carlos

ByAndres Carlos

19 дек 2018

0

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310

Дата:

17 окт 1856 г.

Сейчас

~ 168 г назад

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