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宽谱带 : 19 phrases in 11 subjects |
| Artificial intelligence | 1 |
| Bridge construction | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Remote sensing | 1 |
| Space | 1 |
| Technology | 7 |
| Telecommunications | 2 |
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