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| ソーナー自己雑音 | |||
| rumore: 22 phrases in 8 subjects |
| Antennas and waveguides | 3 |
| Electronics | 10 |
| Magnetics | 2 |
| Microsoft | 1 |
| Radio | 1 |
| Sound recording | 2 |
| Vacuum tubes | 1 |
| Video recording | 2 |
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