 |
| |||
| 火井; 气井; 天然气井; 产气井; 天然气出气孔; 排瓦斯的钻孔 | |||
| 瓦斯出气孔; 出气孔 | |||
| газовая скважина: 14 phrases in 5 subjects |
| Drilling | 1 |
| General | 7 |
| Oil / petroleum | 1 |
| Oilfields | 4 |
| Production | 1 |
|
| |||
| 火井; 气井; 天然气井; 产气井; 天然气出气孔; 排瓦斯的钻孔 | |||
| 瓦斯出气孔; 出气孔 | |||
| газовая скважина: 14 phrases in 5 subjects |
| Drilling | 1 |
| General | 7 |
| Oil / petroleum | 1 |
| Oilfields | 4 |
| Production | 1 |