biharmonic boundary value problem

例句：

1. 1. The biharmonic problem is a challenging one in the field of acoustics.
   双谐振问题是声学领域中的一个挑战性问题。
2. 2. The biharmonic method is used to solve this type of problem efficiently.
   双谐振方法被用来高效地解决这种类型的问题。
3. 3. In the study of sound propagation, biharmonic solutions are often used to model complex waveforms.
   在声波传播研究中，双谐振解通常用于模拟复杂的波形。