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| öppet system | |||
| öppen strömkrets | |||
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| öppen kylkrets | |||
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open-circuit : 50 phrases in 12 subjects |
| Accumulators | 2 |
| Communications | 13 |
| Electric machinery | 1 |
| Electronics | 17 |
| General | 1 |
| Information technology | 2 |
| Isolation | 1 |
| Mechanic engineering | 8 |
| Medical | 1 |
| Metallurgy | 2 |
| Technology | 1 |
| Transformers | 1 |