 |
| |||
| depth interval; interval; section | |||
| well section; hole interval | |||
| 井段: 143 phrases in 9 subjects |
| Drilling | 54 |
| Earth sciences | 5 |
| Engineering geology | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Geophysics | 7 |
| Mining | 2 |
| Oil / petroleum | 43 |
| Technology | 26 |