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| cross section; cross-section | |||
| cross section of interaction | |||
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sezione efficace : 21 phrases in 6 subjects |
| Antennas and waveguides | 2 |
| Chemistry | 1 |
| Earth sciences | 15 |
| Electronics | 1 |
| Metallurgy | 1 |
| Nuclear physics | 1 |
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