| |||
well in operation | |||
active well | |||
working shaft | |||
| |||
working shaft |
工 作 井 : 64 phrases in 10 subjects |
China | 1 |
Drilling | 10 |
Earth sciences | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 4 |
Geophysics | 1 |
Mechanics | 1 |
Mining | 2 |
Oil / petroleum | 15 |
Technology | 28 |