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| acoustic detection | |||
| акустическое обнаружение: 30 phrases in 10 subjects |
| Aviation | 1 |
| Construction | 1 |
| Electrical engineering | 1 |
| Energy industry | 1 |
| Makarov | 1 |
| Military | 14 |
| Nautical | 1 |
| Security systems | 1 |
| Technology | 8 |
| Transport | 1 |
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