 |
| |||
| downward derrick assembly | |||
| from the top downward method of derrick assembling | |||
| метод монтажа вышки сверху вниз: 1 צירופים, 1 נושאים |
| נפט וגז | 1 |
|
| |||
| downward derrick assembly | |||
| from the top downward method of derrick assembling | |||
| метод монтажа вышки сверху вниз: 1 צירופים, 1 נושאים |
| נפט וגז | 1 |