vertical plane: 32 phrases in 16 subjects |
Antennas and waveguides | 3 |
Architecture | 1 |
Artillery | 2 |
Aviation | 1 |
Construction | 5 |
Electrical engineering | 1 |
Geology | 1 |
Geophysics | 1 |
GOST | 1 |
Makarov | 2 |
Mass media | 1 |
Mathematics | 1 |
Nautical | 6 |
Oil / petroleum | 2 |
Photography | 1 |
Technology | 3 |