| |||
| from time to time; irregularly | |||
|
dorywczo : 13 phrases in 8 subjects |
| Construction | 1 |
| Economics | 1 |
| Education | 1 |
| Electric motors | 2 |
| Electrical engineering | 2 |
| Electricity generation | 2 |
| General | 3 |
| Power system protection | 1 |
| |||
| from time to time; irregularly | |||
|
dorywczo : 13 phrases in 8 subjects |
| Construction | 1 |
| Economics | 1 |
| Education | 1 |
| Electric motors | 2 |
| Electrical engineering | 2 |
| Electricity generation | 2 |
| General | 3 |
| Power system protection | 1 |