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| ламповый усилитель | |||
| tube amplifier: 35 phrases in 13 subjects |
| Automated equipment | 1 |
| Aviation | 3 |
| Electronics | 7 |
| High frequency electronics | 1 |
| Makarov | 2 |
| Mass media | 1 |
| Military | 1 |
| Oil / petroleum | 1 |
| Physics | 1 |
| Rail transport | 1 |
| Technology | 12 |
| Telecommunications | 3 |
| Trademark | 1 |