如图所示为了探究音调与�率的关系某同学将把钢尺紧按在桌面上一端伸出桌面.拨动钢尺听它�出的声音.1实验中改变钢尺伸出桌面的长度 Template




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tomski如图所示为了探究音调与�率的关系某同学将把钢尺紧按在桌面上一端伸出桌面.拨动钢尺听它�出的声音.1实验中改变钢尺伸出桌面的长度 coloring