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兆 电子伏 : 19 phrases in 11 subjects |
| Aviation | 1 |
| Business | 1 |
| Earth sciences | 1 |
| Electronics | 6 |
| General | 3 |
| Geophysics | 1 |
| Industry | 1 |
| Mathematics | 1 |
| Metallurgy | 1 |
| Space | 1 |
| Technology | 2 |
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