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imagen : 96 phrases in 12 subjects |
| Antennas and waveguides | 1 |
| Electronics | 2 |
| General | 16 |
| Physics | 1 |
| Radio | 44 |
| Radiology | 3 |
| Semiconductors | 1 |
| Telecommunications | 1 |
| Telegraphy | 4 |
| Telephony | 1 |
| Vacuum tubes | 14 |
| Video recording | 8 |
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