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

• Someone cranked up the volume of the public address system
  有人调大了公共广播系统的音量。
• 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。
• All of the equipment will debut groundbreaking features such as a public address system used to provide instructions to persons inside the building in case of an emergency.
  所有设备都会有几个开创性的新特点，比如有上面有公共地址系统，一旦发生紧急情况，可以给大楼里的人们提供指示。
• The captain spoke to the passengers over the public address system.
  船长通过播音装置向乘客讲话。
• 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
• In this paper, the loudspeaker array in the public address system is described.
  叙述扩声系统用的扬声器组阵。
• 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。
• 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。
• 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。
• The only unexpected turn occurred when the familiar "Attention Wal-Mart shoppers" announcement over the public address system broke into the ceremony.
  唯一出乎意料的是在结婚典礼上突然响起公共播在台播放的”沃尔玛顾客们注意了“这句令人熟悉广播语。