 |
| |||
| permanent magnet speaker | |||
| permanent-magnet loudspeaker; permanent-magnet speaker | |||
| 永磁扬声器: 7 phrases in 3 subjects |
| General | 2 |
| Radio | 1 |
| Technology | 4 |
|
| |||
| permanent magnet speaker | |||
| permanent-magnet loudspeaker; permanent-magnet speaker | |||
| 永磁扬声器: 7 phrases in 3 subjects |
| General | 2 |
| Radio | 1 |
| Technology | 4 |