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高频声 : 35 phrases in 14 subjects |
| Automobiles | 2 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 6 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Otorhinolaryngology | 1 |
| Project management | 1 |
| Space | 1 |
| Technology | 15 |
| Telecommunications | 1 |
| Water resources | 1 |
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