wzmocnienie : 90 phrases in 20 subjects |
Analytical chemistry | 2 |
Antennas and waveguides | 2 |
Automatic control | 3 |
Commerce | 2 |
Communications | 6 |
Construction | 16 |
Electronics | 19 |
European Union | 1 |
Fish farming pisciculture | 2 |
General | 3 |
Information technology | 1 |
Lighting other than cinema | 1 |
Medical | 1 |
Microsoft | 2 |
Nuclear physics | 2 |
Piezoelectric crystals | 1 |
Radio | 13 |
Radiology | 1 |
Social science | 5 |
Vacuum tubes | 7 |