在鼓面上撒些小纸团敲击一下鼓面在听到鼓声的同时观察到小纸团在跳动这一现象说明�声的物体在 .想象一下若在月球上做此实验观察到的现象是 Template




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tomski在鼓面上撒些小纸团敲击一下鼓面在听到鼓声的同时观察到小纸团在跳动这一现象说明�声的物体在 .想象一下若在月球上做此实验观察到的现象是 coloring