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field scanning : 42 phrases in 11 subjects |
| Agriculture | 1 |
| Air defense | 2 |
| Aviation | 1 |
| Chemistry | 2 |
| Electronics | 20 |
| Geology | 1 |
| Information technology | 2 |
| Polymers | 1 |
| Space | 4 |
| Technology | 6 |
| Telecommunications | 2 |
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