 |
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| tonal volume | |||
| 音 调 音量: 28 phrases in 13 subjects |
| Advertising | 1 |
| Architecture | 1 |
| Artificial intelligence | 1 |
| Audio electronics | 1 |
| Automobiles | 9 |
| Electronics | 2 |
| General | 6 |
| Project management | 1 |
| Radio | 2 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
| Telecommunications | 1 |
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