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 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。
• Features of Networking Public Address System and Its Application
  网络化公共广播系统的特点及其工程应用
• 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。
• 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。
• As the aircraft was fresh off the assembly line, I can assure you that there was no problem with the public address system, but the speakers 'accents left more than a few passengers confused as we were tossed about over the Bay of Bengal.
  由于飞机是刚刚出厂投入运营，我可以肯定，机上的公共广播系统没有任何问题，但由于发言者的口音问题，当我们在孟加拉湾上空颠簸不已的时候，若干的乘客困惑不已，不知所措。
• Someone cranked up the volume of the public address system
  有人调大了公共广播系统的音量。
• 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。
• The captain spoke to the passengers over the public address system.
  船长通过播音装置向乘客讲话。
• For the public address system in free field, which has multiple loudspeakers, it also has the same effect.
  对于具有分布式扬声器的窒外扩声系统，也有类似的效应。
• 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。