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| pressure anomaly | |||
| 压力异 常: 23 phrases in 7 subjects |
| Drilling | 4 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Geology | 2 |
| Mining | 3 |
| Oil / petroleum | 6 |
| Technology | 5 |
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