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煤田地质
| 勘探
| 煤田地质 | |
| tech. | coalfield geology |
| 勘探 | |
| desert. | exploration survey |
| dril. | explore |
| eng.geol. | exploratory; prove |
| environ. | exploration |
| geol. | survey |
| hydroel.st. | exploration; prospecting; prospect |
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| coalfield geology | |||
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煤田地质 : 14 phrases in 3 subjects |
| Earth sciences | 1 |
| Explosives and Explosive Ordnance Disposal | 3 |
| Technology | 10 |
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