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| aperiodinen; jaksoton; virittämätön | |||
| aperiodisch: 10 phrases in 7 subjects |
| Antennas and waveguides | 1 |
| Communications | 3 |
| Electronics | 2 |
| Mathematics | 1 |
| Mechanic engineering | 1 |
| Natural sciences | 1 |
| Transport | 1 |
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