natural frequencies : 26 phrases in 15 subjects |
Astronautics | 2 |
Aviation | 2 |
Aviation medicine | 2 |
Construction | 1 |
Environment | 1 |
Makarov | 3 |
Mathematics | 1 |
Mechanics | 1 |
Metallurgy | 2 |
Metrology | 1 |
Nautical | 5 |
Robotics | 2 |
Technology | 1 |
Telecommunications | 1 |
Thermal engineering | 1 |