Watts首次设计用于摆动发动机,第18页,来自The Illustrated London News,1851年7月5日(Watts first design for an oscillating engine, page 35 from The Illustrated London News, 5th July 1851 )英语学校 |
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1851 · engraving
· 图片ID: 415648
The Illustrated London News Picture Library, London, UK / Bridgeman Images |
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