false alarm

noun

1. 假警报；虚惊
   a warning about a danger that does not happen; a belief that sth bad is going to happen, when it is not
   1. The fire service was called out but it was a false alarm.
      消防人员接到报警后出动，但这是假报火警。

1. N-COUNT 假警报;虚惊
   When you think something dangerous is about to happen, but then discover that you were mistaken, you can say that it was a false alarm .
   1. ..a bomb threat that turned out to be a false alarm.
      最终证实是虚惊一场的爆炸恐吓

1. a bomb threat that turned out to be a false alarm.
   最终证实是虚惊一场的爆炸恐吓
2. The experimental results show that the model has high detection rate, and which can deduce the false alarm rate effectively.
   对模型和算法进行多种典型攻击测试实验，结果表明模型具有较高的检测率，并能有效降低误警率。
3. For reducing the false alarm, we adopt hierarchical alert classifier which combined misuse intrusion detection and anomaly intrusion detection.
   并且采取结合了不当行为与异常行为侦测的阶层式警报分类器来降低假警报。
4. Simulation results show the mechanism can detect the DNS attack, it makes good compromise between the detection rate and the false alarm rate.
   仿真结果表明，该机制能够有效检测DNS缓存攻击，并实现检测准确率和误警率间的平衡。
5. A new constant false alarm rate ( CFAR) detector ( CMCAGO-CFAR) based on censored mean and cell averaging is presented in this paper.
   文中基于删除平均（CM）方法和单元平均（CA）方法，提出了一种新的恒虚警检测器（CMCAGO-CFAR）。
6. You think this is another false alarm.
   你以为这又是次错误的安排。
7. The model-based false alarm of BIT is studied. Firstly, the information uncertainty that induces false alarm of BIT is analyzed.
   针对基于模型的BIT中的虚警问题，首先分析了引发虚警的信息不确定性；
8. The article expatiates the relation of alarm threshold, investigation level, probability of detecting and false alarm rate.
   阐述了核材料探查仪器的报警阈与调查水平、漏报率和误报率之间的关系。
9. The new family features five integrated technologies that yield high capture rates and low false alarm rates.
   新的系列有五个综合技术特征，仍然是高捕捉率和低误报率。
10. A scan detection platform constructed by unused IP addresses will effectively improve detection accuracy and reduce false alarm.
    利用网络中未使用IP地址构建扫描检测平台能够有效提高检测准确率，降低虚警率。
11. The Design and Realization of Radar Constant False Alarm Curcuit Based on Digital Technology
    基于数字技术的雷达恒虚警电路设计与实现
12. The multielement interrelated detection technique is of maximum detection sensitivity and minimum false alarm rate by the correlation function.
    多元相关探测技术在具有很好的探测灵敏度的同时，兼顾保证了极低的虚警率。
13. Then the paper makes a discussion on how to decrease the probability of false alarm and probability of false rejection.
    论文从水印检测过程中可能发生的两类错误入手，讨论了降低检测虚警概率和漏报概率的一般方法。
14. In order to guarantee the false alarm probability of CFAR detector, we determine practical threshold coefficients by using simulations.
    本文中我们通过仿真的方法确定CFAR中的实际门限系数，研究有限的参考单元数对虚警性能的影响。
15. The running results have testified that the system is easily realized with low false alarm rate and higher value.
    运行结果证实，误报率低，易于实现，具有较高的应用价值。
16. This design can improve the reliability and timeliness of fire alarm system, reduce the false alarm rate and improve the level of intelligent system.
    这一设计可提高火灾报警系统的可靠性与及时性，减少误报率，提高系统的智能化程度。
17. It offers low false alarm rates and nuisance alarm rates without compromising on high probability of detection levels.
    它降低了虚假警报率和干扰警报率，但不会降低高概率的探测级别。
18. The sky went very dark and we thought it was going to rain but it was a false alarm.
    天空变得黑沉沉的，我们以为要下雨了，但结果只是虚惊一场。
19. The results of analysis and the simulation showed that the new method can provide higher detecting probability and lower false alarm rate.
    最后，对该方法的检测流程和检测性能进行分析，仿真结果表明，该方法能够获得更高的检测概率以及更低的虚警概率。
20. It is the core problem in laser detection system keeping low false alarm probability while ensure the detection distance.
    如何在保证激光探测距离的基础上保持低的探测虚警，一直是激光探测系统的核心问题。
21. This has been a false alarm.
    一切都是虚惊一场。
22. And if what is happening on my planet is a false alarm?
    如果我们星球上的事只是假警报呢？
23. She thought she was pregnant, but it turned out to be a false alarm.
    她以为她怀孕了，但结果是虚惊一场。
24. He was the victim of a false alarm.
    他受了一场虚惊。
25. The rumours of a petrol shortage turned out to be a false alarm.
    汽油短缺的谣传原来是一场虚惊。
26. All the air raid warnings, without exception, had been false alarm.
    所有空袭预告毫无例外都是虚假警报。
27. The alarm system went wrong and created a false alarm.
    报警系统失灵，引起一场虚惊。
28. Sorry for the false alarm but it was for a good cause.
    我对假警报表示抱歉，不过这是为了做好事。
29. I already told you it was a false alarm.
    我已经告诉你是误警了。
30. A new multi-threshold frequency domain constant false alarm rate detection algorithm for radar fuse was presented.
    提出了一种新的雷达引信多门限频域恒虚警率检测算法。

noun

1. a warning that is given about something that fails to occur