There is a loudspeaker in a radio.
收音
里有个喇叭。
, 扬声, 喇叭, 麦克风;;, 
;;;
;,变频;There is a loudspeaker in a radio.
收音里有个喇叭。
SASHED candidates standing on car roofs, their voices crackling through loudspeakers.
候选人从车顶的窗口探出头来，扩音
下他的嗓音略微嘈杂。
The loudspeaker announced each airplane as it landed at the airport.
每架飞在
着陆, 扩音就发出通告。
The loudspeakers blared the speech repeatedly.
扬声里反复
声地播送那篇演讲。
Abstract: A network model was developed to analyze a piezoelectric source driving a resonantor to investigate the coupling of the piezoelectric loudspeaker with a thermoacoustic resonantor.
为了研究压电驱动与热声谐振腔间的耦合特性，建立了压电驱动系统的网络模拟模型。
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