 |
| porta: 11 phrases in 6 subjects |
| Economy | 2 |
| Electric motors | 1 |
| Microsoft | 2 |
| Power system protection | 1 |
| Thermal Energy | 4 |
| Vacuum tubes | 1 |
|
| porta: 11 phrases in 6 subjects |
| Economy | 2 |
| Electric motors | 1 |
| Microsoft | 2 |
| Power system protection | 1 |
| Thermal Energy | 4 |
| Vacuum tubes | 1 |