 |
| |||
| widmowy | |||
| gęstość widmowa; natężenie widmowe | |||
| espectral: 91 phrases in 12 subjects |
| Antennas and waveguides | 18 |
| Communications | 1 |
| Electronics | 10 |
| Environment | 1 |
| Lighting other than cinema | 31 |
| Mathematics | 11 |
| Metrology | 3 |
| Piezoelectric crystals | 5 |
| Radio | 2 |
| Radiology | 1 |
| Transport | 1 |
| Vacuum tubes | 7 |