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время бурения | |||
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время выстрела (period between moment when calculation of fuse and deflection begins and moment when gun fires) | |||
сумма наблюдательного и работного времени |
drill-time : 9 phrases in 5 subjects |
Gold mining | 1 |
Military | 2 |
Oil / petroleum | 4 |
Oilfields | 1 |
Tengiz | 1 |