| |||
| Frequenzsieb n | |||
| Frequenzbandfilter n; Filter m | |||
| Frequenzfilter n | |||
|
frequency filter : 24 phrases in 9 subjects |
| Automated equipment | 3 |
| Communications | 2 |
| Electronics | 2 |
| Information technology | 1 |
| Measuring instruments | 2 |
| Microelectronics | 2 |
| Physics | 4 |
| Piezoelectric crystals | 2 |
| Technology | 6 |