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记录图像 : 37 phrases in 11 subjects |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 6 |
| General | 3 |
| Geophysics | 1 |
| Information technology | 1 |
| Metallurgy | 1 |
| Shipbuilding | 1 |
| Space | 4 |
| Technology | 16 |
| Telecommunications | 1 |
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