A thermoacoustic engine converts thermal energy into acoustic power by thermoacoustic effect without any mechanical moving parts.

热声发动机利用热声效应把热能转化为声功，系统中不存在任何机械运动部件。

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The intrinsic relation between the pneumatic parameter, structural parameter and acoustic power level for centrifugal compressor is given.

给出了离心压缩机气动参数和结构参数与声功率级之间的内在关系。

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This paper also studied the influence of acoustic power density, temperature and other parameters on the ultrasonic cleaning through experiment.

通过比对实验分析了驻波和清洗介质的性质对清洗效果的影响。

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Sound Platform 2 is packed with clever features and acoustic power.

ENGADGET: Soundfreaq announces its range of Lightning-compatible docks for early 2013

Thanks in part to ideas born at dB Drag events, the acoustic power of car stereo speakers has increased tenfold in the last ten years, from a maximum of 500 watts per square meter to 5, 000. (A loudspeaker at a rock concert puts out 2, 500 to 3, 000 watts.) Pioneer learned from dB Dragsters to cover speaker coils with ceramics to dissipate heat.

FORBES: Magazine Article

This makes it easier to scale up the number of disks in the drive while keeping drive power consumption and acoustic noise at acceptable levels (and even lower than the air filled drives).

FORBES: Rare Gases and Fine Lines