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| 音響 ichi1 news1 nf11 (おんきょう) | |||
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Acoustique : 123 phrases in 6 subjects |
| Electronics | 101 |
| Piezoelectric crystals | 4 |
| Telegraphy | 4 |
| Telephony | 6 |
| Ultrasound | 4 |
| Wind Energy | 4 |
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