| |||
| FACS (floor and crown block saver Olevelaya) | |||
| |||
| crown block saver | |||
| traveling-block limit switch; crown saver (Leenx) | |||
|
Противозатаскиватель : 7 短语, 4 学科 |
| 技术 | 1 |
| 油和气 | 2 |
| 石油/石油 | 3 |
| 钻孔 | 1 |
| |||
| FACS (floor and crown block saver Olevelaya) | |||
| |||
| crown block saver | |||
| traveling-block limit switch; crown saver (Leenx) | |||
|
Противозатаскиватель : 7 短语, 4 学科 |
| 技术 | 1 |
| 油和气 | 2 |
| 石油/石油 | 3 |
| 钻孔 | 1 |