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| 等值连续探测噪声级 | |||
| 等效连续感觉噪声级 | |||
| equivalent continuous perceived noise level: 6 phrases in 5 subjects |
| Aviation | 1 |
| Business | 1 |
| Electronics | 1 |
| Otorhinolaryngology | 2 |
| Technology | 1 |
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