basic vibration mode

例句：

1. 1. The basic vibration mode of the structure is crucial for its stability.
   结构的基本振动模式对其稳定性至关重要。
2. 2.In the study of sound waves, understanding the basic vibration mode is essential.
   在声波研究中，理解基本振动模式是必要的。
3. 3.The engineers were able to identify the basic vibration mode of the machine before it broke down.
   工程师们能够识别出机器的基本振动模式，从而在它出现故障之前就发现了问题。