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главни | контакти
| Windows Live Контакти | |
| comp., MS | Windows Live Contacts |
| главни: 20 phrases in 11 subjects |
| Economy | 1 |
| Electric machinery | 4 |
| Electric motors | 3 |
| Electricity generation | 3 |
| Mathematics | 1 |
| Microsoft | 1 |
| Power lines | 1 |
| Power system protection | 1 |
| Printed circuit boards | 1 |
| Transformers | 3 |
| Vacuum tubes | 1 |