 |
| |||
| core drill bit | |||
| core barrel | |||
| core drill bit | |||
| coring bit | |||
| core bit | |||
| hollow bit; hollow drill bit; rotary core bit; core bit (полое долото для вырезания цельных кусков породы) | |||
| core drill | |||
| coring tool (Yeldar Azanbayev) | |||
| |||
| core barrel | |||
| |||
| core bit | |||
|
колонковое долото : 64 短语, 8 学科 |
| 建造 | 1 |
| 技术 | 5 |
| 油和气 | 14 |
| 油田 | 3 |
| 石油/石油 | 37 |
| 矿业 | 2 |
| 钻孔 | 1 |
| 马卡罗夫 | 1 |