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90 asteinen | kaksivaihejännitelähde
| kaksivaihejännitelähde | |
| el. | 2-phase voltage source |
| 90: 20 phrases in 9 subjects |
| Agriculture | 2 |
| Electronics | 6 |
| Environment | 1 |
| General | 1 |
| Hobbies and pastimes | 2 |
| Information technology | 4 |
| Microsoft | 1 |
| Natural sciences | 1 |
| Transport | 2 |