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| fortskridande våg; fri fortskridande våg | |||
| gående våg; vandrande våg | |||
| vandringsvåg; våg | |||
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onda progresiva : 7 phrases in 5 subjects |
| Communications | 1 |
| Electronics | 3 |
| Natural sciences | 1 |
| Thermal Energy | 1 |
| Vacuum tubes | 1 |
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