如图所示用相同的瓶子装质量不同的水用瓶塞旋紧瓶口并悬挂起来然后敲击注意听一下盛水的多�与音调的高低有何关系.若能敲出“1 “2 “3 Template




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tomski如图所示用相同的瓶子装质量不同的水用瓶塞旋紧瓶口并悬挂起来然后敲击注意听一下盛水的多�与音调的高低有何关系.若能敲出“1 “2 “3 coloring