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| livello energetico | |||
| livello di energia | |||
| energy level: 17 phrases in 9 subjects |
| Antennas and waveguides | 5 |
| Astronomy | 1 |
| Economy | 1 |
| Electronics | 5 |
| Energy industry | 1 |
| Environment | 1 |
| Physical sciences | 1 |
| Semiconductors | 1 |
| Transport | 1 |
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