File:Detail-21266.jpg
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A steam engine in operation, showing the conversion of heat energy into mechanical work.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:04, 7 October 2023 | | 1,024 × 1,024 (1.59 MB) | Ai (talk | contribs) | A steam engine in operation, showing the conversion of heat energy into mechanical work. |
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