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уровень жидкости : 25 phrases in 10 subjects |
| Automated equipment | 4 |
| Chemistry | 3 |
| Food industry | 1 |
| General | 1 |
| Hydraulic engineering | 1 |
| Medical | 1 |
| Oil and gas technology | 6 |
| Packaging | 4 |
| Technology | 1 |
| Trucks/Lorries | 3 |
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