loudspeaker

n.

扩音器，扬声器；喇叭；扬场器；

复数：loudspeakers

1. The nurse paged the doctor on the loudspeaker.
   护士通过广播喊叫那位医生。
2. We heard the news over the loudspeaker.
   我们听见扩音器里广播了这一消息。
3. The police addressed the crowd through a loudspeaker on their car.
   警察通过他们汽车上的喇叭向人群喊话。

Loudspeaker
The audio spotlight: An application of nonlinear interaction of sound waves to a new type of loudspeaker design
Direct-radiator loudspeaker system analysis
PRESSURE GRADIENT MICROPHONE FOR MEASURING AN ACOUSTIC CHARACTERISTIC OF A LOUDSPEAKER
In-situ Characterization of Vibrations from a Door Mounted Loudspeaker
LOUDSPEAKER ARRANGEMENT FOR A MOTOR VEHICLE AND MOTOR VEHICLE
Acoustic (loudspeaker) facial electromyographic monitoring: Part 1. Evoked electromyographic activity during acoustic neuroma resect...
Acoustic control by wave field synthesis
Fundamentals of binaural technology
Benard-von Karman instability: transient and forced regimes