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| 地 面 压力: 32 phrases in 9 subjects |
| Agriculture | 1 |
| Automobiles | 3 |
| Aviation | 1 |
| Drilling | 1 |
| Earth sciences | 1 |
| Geophysics | 2 |
| Mining | 12 |
| Oil / petroleum | 8 |
| Technology | 3 |
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