声音在介质中是以 的形式传播蝙蝠可以靠超声波�现昆虫这说明声音可以传递 用超声波振动除去人体内的结石这说明声音可以传递 . 题目和参考 Template




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tomski声音在介质中是以 的形式传播蝙蝠可以靠超声波�现昆虫这说明声音可以传递 用超声波振动除去人体内的结石这说明声音可以传递 coloring