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为什么纵波的速度比横波的速度快

更新时间: 2020-09-19 00:00:00     

声音传播与介质有关:

横波传播与介质的切变有关,其波速等于介质材料的切变模量除以介质的密度再开方,介质材料的切变模量,因材料而异。纵波传播与介质长变或体变有关,其波速等于介质材料的杨氏模量除以介质的密度再开方,介质材料的杨氏模量,因材料而异。因为同种材料的切变模量要小于杨氏模量,所以同种介质中纵波波速较大。

关键词: 为什么 纵波 速度 横波

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