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| Wellenform f | |||
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forme des ondes : 17 phrases in 10 subjects |
| Antennas and waveguides | 1 |
| Coal | 1 |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 5 |
| Information technology | 3 |
| Measuring instruments | 1 |
| Mechanic engineering | 2 |
| Medical appliances | 1 |
| Радиоактивное излучение | 1 |
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