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

• Based upon the project of Nanning International Conference& Exhibition Center, this article introduces the structure and the design and debugging methods of a new digital public address system.
  本文以南宁国际会议展览中心为例，介绍了一种新型的数字化公共广播系统的组成、设计与调试方法。
• 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
• 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。
• Around the world, flight attendants routinely use the plane's public address system to thank passengers moments after a jetliner lands, welcoming them to the destination point.
  在全球范围内，飞机降落后，航班乘务员通常会利用飞机的公共广播系统向乘客表达感谢，欢迎他们到达目的地。
• 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 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。
• In my cluster, eth0 is the public IP address of my system.
  在我的集群中，eth0是我的系统的公共IP地址。
• Private health care institutions are useful complement to public medical and health institutions, and training and development of private medical and health institutions will address the problems of current health care system in our country.
  民办医疗卫生机构是公立医疗卫生机构的有益补充，培育和发展民办医疗卫生机构将解决目前我国基层卫生服务体系存在的问题。
• Oh, I think they're announcing my flight over the public address system. I'd better be going.
  啊！我听到扩音器在广播我的班机了，我该走了。
• 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。