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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 | |||
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drill-time : 9 phrases in 5 subjects |
| Gold mining | 1 |
| Military | 2 |
| Oil / petroleum | 4 |
| Oilfields | 1 |
| Tengiz | 1 |
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