 |
| attivazione: 56 phrases in 14 subjects |
| Antennas and waveguides | 3 |
| Astronomy | 2 |
| Chemistry | 6 |
| Computers | 1 |
| Economy | 1 |
| Electrical engineering | 1 |
| Electronics | 1 |
| General | 4 |
| Metallurgy | 1 |
| Microsoft | 29 |
| Military | 1 |
| Radio | 2 |
| Sewage and wastewater treatment | 1 |
| Technology | 3 |