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nullast : 14 phrases in 9 subjects |
| Antennas and waveguides | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| Environment | 1 |
| Information technology | 1 |
| Measuring instruments | 1 |
| Mechanic engineering | 6 |
| Technology | 1 |
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