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research method : 26 phrases in 17 subjects |
| Aerohydrodynamics | 1 |
| Artificial intelligence | 1 |
| Automated equipment | 1 |
| Aviation medicine | 1 |
| Construction | 2 |
| Education | 4 |
| General | 1 |
| Geography | 1 |
| Marketing | 1 |
| Mathematics | 1 |
| Military | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 5 |
| Oilfields | 1 |
| Scientific | 2 |
| Technology | 1 |
| Water supply | 1 |