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| exploratory work | |||
| exploration work; prospecting work | |||
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勘探 工作 : 28 phrases in 9 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Engineering geology | 2 |
| General | 1 |
| Geology | 1 |
| Hydroelectric power stations | 2 |
| Name of organization | 3 |
| Oil / petroleum | 5 |
| Technology | 12 |
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