 |
|
frequency control : 30 phrases in 14 subjects |
| Automated equipment | 3 |
| Communications | 6 |
| Electricity generation | 1 |
| Electronics | 9 |
| Finances | 1 |
| Health care | 1 |
| Industry | 1 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Patents | 1 |
| Power electronics | 1 |
| Radio | 2 |
| Textile industry | 1 |
| Transport | 1 |