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| tool; tools; sonde | |||
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下井仪 : 82 phrases in 10 subjects |
| Drilling | 7 |
| Electronics | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Geophysics | 14 |
| Mining | 6 |
| Navigation | 1 |
| Oil / petroleum | 43 |
| Technology | 7 |
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