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| constant attenuation | |||
| 常数衰减: 21 phrases in 10 subjects |
| Automobiles | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Geophysics | 1 |
| Information technology | 2 |
| Oil / petroleum | 1 |
| Technology | 6 |
| Telecommunications | 3 |
| Wind Energy | 3 |
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