为了探究声音的响度与振幅的关系小明设计了如图所示的几个实验.你认为能够完成这个探究目的是a用大小不同的力敲打鼓面观察纸�跳动的情况b把 Template




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tomski为了探究声音的响度与振幅的关系小明设计了如图所示的几个实验.你认为能够完成这个探究目的是a用大小不同的力敲打鼓面观察纸�跳动的情况b把 coloring