 |
| |||
| пружина предохранительного клапана (fewer hits Alexander Demidov) | |||
| safety valve spring: 16 phrases in 7 subjects |
| Caspian | 1 |
| General | 6 |
| Occupational health & safety | 1 |
| Oil and gas | 5 |
| Oil and gas technology | 1 |
| Oil processing plants | 1 |
| Transport | 1 |
|
| |||
| пружина предохранительного клапана (fewer hits Alexander Demidov) | |||
| safety valve spring: 16 phrases in 7 subjects |
| Caspian | 1 |
| General | 6 |
| Occupational health & safety | 1 |
| Oil and gas | 5 |
| Oil and gas technology | 1 |
| Oil processing plants | 1 |
| Transport | 1 |