 |
| noise reduction: 103 phrases in 27 subjects |
| Architecture | 1 |
| Astronautics | 2 |
| Automated equipment | 3 |
| Aviation | 3 |
| Cinematography | 1 |
| Construction | 4 |
| Ecology | 6 |
| Electronics | 8 |
| Energy industry | 4 |
| General | 1 |
| Geophysics | 9 |
| Hi-Fi | 2 |
| Household appliances | 3 |
| Makarov | 10 |
| Mass media | 4 |
| Medical | 1 |
| Military | 7 |
| Natural resourses and wildlife conservation | 3 |
| Occupational health & safety | 2 |
| Oil / petroleum | 1 |
| Photography | 1 |
| Polygraphy | 1 |
| Security systems | 1 |
| Sound recording | 1 |
| Technology | 16 |
| Telecommunications | 7 |
| Wood processing | 1 |