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| 开发井 | |||
| 详探井 | |||
| development well: 19 phrases in 8 subjects |
| Agriculture | 1 |
| China | 1 |
| Drilling | 2 |
| Engineering geology | 1 |
| Geology | 5 |
| Mining | 1 |
| Oil / petroleum | 3 |
| Technology | 5 |
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