Файл:Yuan Dynasty - waterwheels and smelting.png

Yuan_Dynasty_-_waterwheels_and_smelting.png(800 × 592 пиксел, файлын хэмжээ: 262 КБ, MIME төрөл: image/png)

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English: This medieval printed illustration depicts waterwheels powering the bellows of a blast furnace in creating cast iron. This illustration is taken from the 14th century treatise Nong Shu, written by Wang Zhen in 1313 AD, during the Chinese Yuan Dynasty.
Огноо AD
Эх үүсвэр http://www.waterhistory.org/histories/waterwheels/
Зохиогч Wang Zhen

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