Because the structure vibrates at some modal, a vibration peak value will appear at its noise frequency spectrum.

这是因为结构以某一阶模态振动时，将在其辐射噪声频谱上出现一个峰值。

youdao

Because the structure vibrates at some modal, a vibration peak value will appear at its noise frequency spectrum.

这是因为结构以某一阶模态振动时，将在其辐射噪声频谱上出现一个峰值。

youdao