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основное направление |
主 方向: 57 phrases in 13 subjects |
Antennas and waveguides | 2 |
Automated equipment | 1 |
Automobiles | 1 |
Aviation | 3 |
Education | 1 |
General | 25 |
Geology | 1 |
Mathematics | 2 |
Metallurgy | 1 |
Military | 9 |
Nautical | 1 |
Technology | 8 |
Telecommunications | 2 |