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| 恒定衰减; 常数衰减 | |||
| constant attenuation: 23 phrases in 12 subjects |
| Aviation | 1 |
| Electric machinery | 2 |
| Electronics | 2 |
| Engineering geology | 1 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 2 |
| Mathematics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Technology | 8 |
| Telecommunications | 1 |
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