electro-acoustical reciprocity theorem

例句：

1. 1.The electro-acoustical reciprocity theorem is fundamental to understanding the behavior of sound waves in a medium.
   电声学互易定理是理解声波在介质中行为的基础。
2. 2. This theory has been instrumental in developing new acoustic materials for use in high-frequency applications.
   这一理论在开发用于高频应用的新型声学材料方面发挥了重要作用。
3. 3. By applying this theorem, scientists were able to predict how sound waves would interact with each other and with the environment around them.
   通过应用这一定理，科学家们能够预测声波如何相互影响以及它们与周围环境之间的相互作用。