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| |||
| signal analysis | |||
| signature analysis | |||
| signals analysis | |||
| 信 号 分析: 53 phrases in 11 subjects |
| Air defense | 2 |
| Aviation | 5 |
| Earth sciences | 2 |
| Electric machinery | 1 |
| Electronics | 17 |
| General | 1 |
| Geophysics | 4 |
| Otorhinolaryngology | 1 |
| Space | 8 |
| Technology | 11 |
| Telecommunications | 1 |
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