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焦线 : 89 phrases in 11 subjects |
| Aerodynamics | 1 |
| Antennas and waveguides | 4 |
| Electronics | 1 |
| General | 28 |
| Mathematics | 7 |
| Medical | 1 |
| Military | 1 |
| Oil and gas | 1 |
| Physics | 8 |
| Technology | 35 |
| Telecommunications | 2 |
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