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| |||
| operational issues (Natalie_apple) | |||
| usability problems (Lub-off) | |||
| production problems (скважины) | |||
| проблемы эксплуатации: 10 phrases in 6 subjects |
| Astronautics | 1 |
| Energy industry | 4 |
| European Bank for Reconstruction and Development | 2 |
| General | 1 |
| Military | 1 |
| Oil and gas | 1 |