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| time-depth curve | |||
| 时深曲线: 26 phrases in 8 subjects |
| Desert science | 2 |
| Drilling | 2 |
| Earth sciences | 4 |
| Ecology | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Technology | 12 |
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