 |
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| Phonogerät n; Schallmessgerät n | |||
| Abhorchgerät n | |||
| акустический прибор: 21 phrases in 10 subjects |
| Athletics | 1 |
| Aviation | 2 |
| Construction | 1 |
| Electronics | 4 |
| Microelectronics | 4 |
| Natural resourses and wildlife conservation | 3 |
| Nautical | 1 |
| Navy | 1 |
| Radio | 1 |
| Shipbuilding | 3 |