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| 信号数据 | |||
| signal data: 52 phrases in 12 subjects |
| Air defense | 2 |
| Aviation | 14 |
| Cables and cable production | 1 |
| Computers | 1 |
| Electronics | 13 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Space | 5 |
| Technology | 10 |
| Telecommunications | 2 |
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