美国研究人员说：声音可在未来的热机中起关键作用。新墨西哥州洛斯阿拉莫斯国家实验室的研究小组已经开发出一种环保热机，用声波作动力。新型热机由钢管制成，造价低廉，定名为热声斯特灵热机。热机由一个细长的棒球拍形状的共振腔外加一个充当把手的卵形仓构成，热机内充满 American researchers say the sound can play a key role in the future heat engine. A team from Los Alamos National Laboratory in New Mexico has developed an environmentally friendly heat engine that uses sound waves as a motivation. The new heat engine made of steel pipe, low cost, named hot sound Stirling heat machine. Heat machine by a slender baseball bat shape of the cavity plus a handle as oval warehouse composition, the heat machine is full