decay rate: 45 phrases in 21 subjects |
Acoustics | 1 |
Apollo-Soyuz | 2 |
Astronautics | 3 |
Construction | 2 |
Ecology | 1 |
Electrical engineering | 1 |
Electronics | 4 |
Makarov | 2 |
Mass media | 1 |
Mathematics | 2 |
Medical | 1 |
Metallurgy | 5 |
Meteorology | 1 |
Nanotechnology | 2 |
Navigation | 1 |
Oil / petroleum | 1 |
Rail transport | 2 |
Road works | 1 |
Technology | 10 |
Telecommunications | 1 |
Радиоактивное излучение | 1 |