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| 31. | relating to audible sound. |
| 与听得见的声音相关的。 |
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| 32. | Audible leak indicator |
| 音响泄漏指示器 |
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| 33. | audible emergency alarm |
| 有声紧急警报器 |
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| 34. | audible call-out system |
| 声响调派系统 |
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| 35. | audible signal panel |
| 音响信号盘 |
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| 36. | audible warning system |
| 音响警告系统 |
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| 37. | audible warning device |
| 音响警报装置 |
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| 38. | audible aid to navigation |
| 声响助航器材 |
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| 39. | audible warning sound |
| 音响警告 |
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| 40. | audible device at escalator |
| 自动梯发声设备 |
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