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| 天然气显示; 气苗 | |||
| 天然气迹象钻井 | |||
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show gas : 38 phrases in 7 subjects |
| Construction | 1 |
| Drilling | 5 |
| Earth sciences | 2 |
| Geology | 20 |
| Mining | 1 |
| Oil / petroleum | 4 |
| Technology | 5 |
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