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radar pulse : 104 phrases in 10 subjects |
| Air defense | 31 |
| Aviation | 9 |
| Earth sciences | 1 |
| Electronics | 6 |
| Engineering geology | 1 |
| General | 1 |
| Information technology | 2 |
| Shipbuilding | 1 |
| Space | 32 |
| Technology | 20 |
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