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| 含气岩层 | |||
| 含气岩 | |||
| 气石 | |||
| gas rock: 20 phrases in 7 subjects |
| Construction | 1 |
| Ecology | 1 |
| Explosives and Explosive Ordnance Disposal | 3 |
| Geology | 1 |
| Oil / petroleum | 7 |
| Technology | 6 |
| United Nations | 1 |
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