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| Title | Author | Rating | Downloads | Comments | Date added | 
|---|---|---|---|---|---|
| a steam train | yazn801012 | 5 (1 vote) | 2512 | 0 | 2022/10/16 23:13:08 | 
| a kind of valve mechanasim | yazn801012 | 5 (1 vote) | 514 | 0 | 2022/07/21 04:57:37 | 
| water-powered car? | yazn801012 | 5 (1 vote) | 1530 | 0 | 2022/07/19 11:02:48 | 
| gear puzzle | yazn801012 | 5 (1 vote) | 1062 | 0 | 2022/06/16 02:03:47 |