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| 气层; 含气层段 | |||
| 含气带 | |||
| 含气岩层; 气带 | |||
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gas zone : 43 phrases in 8 subjects |
| Chemistry | 1 |
| Drilling | 3 |
| Geology | 3 |
| Metallurgy | 5 |
| Mining | 2 |
| Nautical | 3 |
| Oil / petroleum | 9 |
| Technology | 17 |
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