 |
| |||
| shot hole | |||
| 炮井: 23 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 3 |
| Geophysics | 1 |
| Oil / petroleum | 15 |
| Technology | 4 |
|
| |||
| shot hole | |||
| 炮井: 23 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 3 |
| Geophysics | 1 |
| Oil / petroleum | 15 |
| Technology | 4 |