 |
| |||
| 油井指数 | |||
| well index: 15 phrases in 7 subjects |
| Drilling | 1 |
| Electronics | 4 |
| Finances | 1 |
| Mining | 4 |
| Oil / petroleum | 1 |
| Securities | 3 |
| Technology | 1 |
|
| |||
| 油井指数 | |||
| well index: 15 phrases in 7 subjects |
| Drilling | 1 |
| Electronics | 4 |
| Finances | 1 |
| Mining | 4 |
| Oil / petroleum | 1 |
| Securities | 3 |
| Technology | 1 |