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水声仪 : 46 phrases in 12 subjects |
| Aviation | 1 |
| Compressors | 1 |
| Drilling | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Engineering geology | 2 |
| General | 1 |
| Geophysics | 1 |
| Navigation | 1 |
| Oil / petroleum | 4 |
| Shipbuilding | 2 |
| Technology | 29 |
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