03有趣的聲光現象01聲音如何產生和傳播01

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

03有趣的聲光現象01聲音如何產生和傳播01

Sign in to Google to save your progress. Learn more

* Indicates required question

3. 不論是吹哨子的聲音，還是鳥鳴叫的聲音，都是因為物體振動產生的。

*

100 points

是

否

Submit

Clear form

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy