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tunnelling (Alexander Demidov); deep bore tunneling (VLZ_58) | |||
underground method (добычи агроруд) | |||
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closed way |
закрытый способ: 15 phrases in 7 subjects |
Aviation | 1 |
Construction | 2 |
Makarov | 2 |
Metallurgy | 1 |
Microelectronics | 2 |
Programming | 1 |
Technology | 6 |