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стержень-перемычка; тонкая шейка (легко отделяемой прибыли); пережим |
breaker core: 18 phrases in 10 subjects |
Drilling | 1 |
Geology | 1 |
Makarov | 1 |
Metallurgy | 2 |
Military | 1 |
Occupational health & safety | 5 |
Oil / petroleum | 3 |
Oil and gas | 2 |
Oil and gas technology | 1 |
Technology | 1 |