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| Schallfrequenz f; Tonfrequenz f | |||
| Sprachfrequenz f | |||
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тональной частоты : 49 phrases in 9 subjects |
| Automated equipment | 5 |
| Computers | 2 |
| Electronics | 21 |
| Medical appliances | 2 |
| Military | 1 |
| Radio | 3 |
| Rail transport | 6 |
| Technology | 4 |
| Telephony | 5 |
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