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法面法平面 : 44 phrases in 14 subjects |
| Aerodynamics | 1 |
| Astronautics | 1 |
| Aviation | 1 |
| Drilling | 1 |
| Education | 1 |
| Electronics | 3 |
| General | 21 |
| Mathematics | 5 |
| Medical | 1 |
| Military | 1 |
| Oilfields | 1 |
| Seismology | 2 |
| Silicate industry | 1 |
| Technology | 4 |
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