“齿轮泵”是什么？把两个转动的齿轮放进水里，有趣的现象发生了
| YouTube url: | https://www.youtube.com/watch?v=zomeiKT_n-g |
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| Created: | 12. 10. 2022 12:59:52 |
| YouTube url: | https://www.youtube.com/watch?v=zomeiKT_n-g |
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| Created: | 12. 10. 2022 12:59:52 |
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