在探究声音的特性时进行如下实验实验如图1示先拨动张紧的细橡皮筋再拨动粗橡皮筋观察先后两次�声时橡皮筋振动快慢及声音的特点记录如下表 Template




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tomski在探究声音的特性时进行如下实验实验如图1示先拨动张紧的细橡皮筋再拨动粗橡皮筋观察先后两次�声时橡皮筋振动快慢及声音的特点记录如下表 coloring