在课外探究“人耳怎样听到声音 的过程中小丽等同学运用肥皂膜代替人耳的鼓膜进行了如图的实验当喇叭�声时从观察到肥皂膜的变化可以联想到人耳 Template




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tomski在课外探究“人耳怎样听到声音 的过程中小丽等同学运用肥皂膜代替人耳的鼓膜进行了如图的实验当喇叭�声时从观察到肥皂膜的变化可以联想到人耳 coloring