 |
| |||
| slender column (работающая на продольный изгиб); long column | |||
| soft-string (вариант модели Alexander Dolgopolsky) | |||
| slender column | |||
| гибкая колонна: 31 phrases in 5 subjects |
| Drilling | 15 |
| Oil / petroleum | 5 |
| Oil and gas | 4 |
| Oil and gas technology | 4 |
| Oilfields | 3 |
|
| |||
| slender column (работающая на продольный изгиб); long column | |||
| soft-string (вариант модели Alexander Dolgopolsky) | |||
| slender column | |||
| гибкая колонна: 31 phrases in 5 subjects |
| Drilling | 15 |
| Oil / petroleum | 5 |
| Oil and gas | 4 |
| Oil and gas technology | 4 |
| Oilfields | 3 |