下列实验或实例能用来探究声音的产生与传播1往鼓面上撤一些泡沫�敲鼓时见到泡沫�不停地跳动用手按住鼓面泡沫�停止跳动鼓声消失 Template




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tomski下列实验或实例能用来探究声音的产生与传播1往鼓面上撤一些泡沫�敲鼓时见到泡沫�不停地跳动用手按住鼓面泡沫�停止跳动鼓声消失 coloring