phason

例句：

1. 1. The overtone frequencies of the sound waves are crucial for the accurate measurement of distance.
   声波的泛音频率对于准确测量距离至关重要。
2. 2. The resonance frequency of the mechanical system is critical for its performance.
   机械系统的共振频率对其性能至关重要。
3. 3. The analysis of overtones in this region has led to significant advancements in acoustic engineering.
   在这个区域的泛音分析已经显著推动了声学工程的进步。