如图是课本上的演示实验请按要求回答1如图甲所示将悬挂的泡沫�料球轻轻接触正在�声的音叉观察到泡沫�料球料多次被音叉弹开且声音消失 Template




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tomski如图是课本上的演示实验请按要求回答1如图甲所示将悬挂的泡沫�料球轻轻接触正在�声的音叉观察到泡沫�料球料多次被音叉弹开且声音消失 coloring