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31. | modulation alarm |
| 调制告警 |
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32. | alarm apparatus |
| 警报器 |
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33. | alarm mainspring |
| 闹钟发条 |
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34. | alarm satellite |
| 报警卫星 |
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35. | alarm thermostat |
| 恒温报警器 |
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36. | auxiliary alarm |
| 辅助报警器 |
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37. | annunciator alarm |
| 警报信号器 |
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38. | audible alarm |
| 可闻报警信号 |
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39. | sprinkler alarm |
| 洒水喷头联动报警 |
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40. | alarm substance |
| 警报物质 |
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