ثنائى: 69 phrases in 12 subjects |
Antennas and waveguides | 14 |
Electric traction | 2 |
Electronics | 8 |
Lighting other than cinema | 3 |
Piezoelectric crystals | 1 |
Power lines | 5 |
Radiobiology | 4 |
Radiology | 1 |
Rail transport | 1 |
Semiconductors | 27 |
Telecommunications | 1 |
Telegraphy | 2 |