There is a loudspeaker in a radio.
收音机里有个
。
义词There is a loudspeaker in a radio.
收音机里有个。
SASHED candidates standing on car roofs, their voices crackling through loudspeakers.
候选人从车顶的窗口探出头来，扩音器下他的嗓音略微嘈杂。
The loudspeaker announced each airplane as it landed at the airport.
每架飞机在机场一着陆, 扩音器就发出通告。
The loudspeakers blared the speech repeatedly.
扬声器里反复大声地播送那篇演
。
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.
研究压电驱动器与热声谐振腔间的耦合特性，建立压电驱动系统的网络模拟模型。
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