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| 21. | audible traffic signal |
| 响号交通灯 |
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| 22. | Audible pedestrian signa |
| 盲人音响号志 |
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| 23. | audible record message |
| 录音广播 |
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| 24. | highest audible tone |
| 最高可听音 |
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| 25. | audible warning signal |
| 声响警告信号 |
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| 26. | audible alarm signal |
| 声响火警信号 |
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| 27. | minimal audible intensity |
| 最低可听强度 |
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| 28. | Positive audible feedback |
| 正面听觉反馈 |
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| 29. | minimum audible threshold |
| 最低可听阈 |
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| 30. | minimum audible field |
| 最小可闻区域 |
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