There is a loudspeaker in a radio.

音机里有个喇叭。

The loudspeaker announced each airplane as it landed at the airport.

每架飞机在机场一着陆, 扩音就发。

SASHED candidates standing on car roofs, their voices crackling through loudspeakers.

候选人从车顶的窗口探头来，扩音下他的嗓音略微嘈杂。

The loudspeakers blared the speech repeatedly.

扬声里反复大声地播送那篇演讲。

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。