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| сноп лучей | |||
| рентгеновский луч; пучок лучей; пучок рентгеновских лучей | |||
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haz de rayos : 4 phrases in 4 subjects |
| Antennas and waveguides | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Geology | 1 |
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