loud-speaker Hot扩音机
band loud-speaker薄带扬声器;翻译;薄带扬声器英语
piezoelectric loud-speaker压电式扬声器
magnetic loud-speaker簧舌式扬声器
loud-speaker coaxial同轴扬声器
loud-speaker aperture机箱扬声器孔隙
electrostaboutic loud-speaker静电扬声器
hot wire loud-speaker热线式扬声器
loud-speaker or loudspeaker扬声器
N-COUNT（可数名词） A loudspeaker is a piece of electronic equipment that forms part of a public address system and transmits sound. 扬声器
The loudspeaker announced the arrival of the train.
广播说火车进站了。
N-COUNT（可数名词） A loudspeaker is a piece of equipment, for example, part of a radio or hi-fi system, through which sound comes out. 喇叭 [英国英语]