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| 连续性噪声 | |||
| 连续噪声 | |||
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continuous noise : 19 phrases in 7 subjects |
| Air defense | 2 |
| Aviation | 4 |
| Business | 1 |
| Electronics | 3 |
| Otorhinolaryngology | 2 |
| Space | 2 |
| Technology | 5 |
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