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

• They said they would page him over the public address system.
  他们说他们要借广播系统寻找他。
• 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。
• Design on the Public Address System of Chongqing Fuling Stadium
  重庆涪陵体育场扩声系统设计
• Both a microphone for audio recording and speakers as part of a public address system can be connected to the cameras.
  双麦克风使得相机具有录音和喇叭功能，并作为公共广播系统能被连接到相机。
• 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
• Someone cranked up the volume of the public address system
  有人调大了公共广播系统的音量。
• 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。
• 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。
• 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。
• 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。