public address system

英 [ˌpʌblɪk əˈdres sɪstəm]

美 [ˌpʌblɪk əˈdres sɪstəm]

n.  扩音系统

计算机

牛津词典

noun

• 扩音系统
  an electronic system that uses microphones and loudspeakers to make music, voices, etc. louder so that they can be heard by everyone in a particular place or building

柯林斯词典

• N-COUNT 扩音系统（缩略形式为PA）
  Apublic address systemis a set of electrical equipment which allows someone's voice, or music, to be heard throughout a large building or area. The abbreviationPAis also used.
  1. The news was announced on the public address system at the high school.
     消息是在这所中学的广播里宣布的。

英英释义

noun

• an electronic amplification system used as a communication system in public areas
  Synonym:P.A. systemPA systemP.A.PA

双语例句

• The public address system in the hospital was used for paging.
  医院里的扩音系统用来呼叫人名。
• Distributing Public Address System and the Special Delay-time Device
  分布式扩声及其专用延时器的研制
• Therefore, the main problem discussed in the essay is that how we learn digital public address system, what the need of the civil airport public address system is, and how we connect the digital public address system with practical application at the airport.
  应该怎样认识数字化公共广播，民航机场公共广播系统有些什么样的需求，怎样才能把数字化公共广播系统与机场的实际运用结合起来，这是本文主要讨论的问题。
• Design on the Public Address System of Chongqing Fuling Stadium
  重庆涪陵体育场扩声系统设计
• But as I picked up the wireless microphone and began my speech, I realized in horror that my public address system was silent.
  但正当我拿起无线话筒开始发言时，我惊恐地意识到我的扩音器不起作用了。
• If the public address system is operated below but too close to the instability condition the frequency shifter can reduce effectively the interference of the regenerative reverberation.
  若语言扩声系统临近不稳定状态工作，频移器可以有效地减少再生混响干扰。
• Someone cranked up the volume of the public address system
  有人调大了公共广播系统的音量。
• A proposal on acoustic characteristic indices of public address system in a Hall
  厅堂扩声系统声学特性指标的建议
• They tried to adapt the public address system into a radio transmitter.
  他们想法把广播设备改装成无线电发报机。
• Some problems of the power transmission circuit in the public address system are discussed.
  探讨了定压式公共广播系统传输线路的一些问题。