частота колебаний: 83 phrases in 16 subjects |
Astronautics | 4 |
Astronomy | 1 |
Aviation | 27 |
Chemistry | 3 |
Construction | 4 |
Electronics | 4 |
Energy system | 1 |
Forestry | 1 |
High energy physics | 1 |
Mechanic engineering | 3 |
Metallurgy | 2 |
Natural resourses and wildlife conservation | 1 |
Physics | 3 |
Radio | 17 |
Technology | 9 |
Trucks/Lorries | 2 |