pièges: 36 phrases in 13 subjects |
Agriculture | 3 |
Antennas and waveguides | 8 |
Chemistry | 1 |
Construction | 6 |
Economy | 1 |
Fish farming pisciculture | 2 |
Forestry | 1 |
General | 4 |
Piezoelectric crystals | 4 |
Social science | 1 |
Superconductivity | 3 |
Transport | 1 |
Vacuum tubes | 1 |