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| drill-hole survey | |||
| borehole survey; borehole surveying; drilling survey; hole survey | |||
| 钻孔测量: 27 phrases in 8 subjects |
| Earth sciences | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
| Technology | 19 |
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