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                ## 其它思考 不是一樣的頻率,不同發聲體演唱出來聲音不一樣,而是不同材質的發聲體的頻率不一樣。聲音效果就取決于頻率,只要頻率相同,聲音就是一樣的。 * * * * * last update:2018-6-22 12:17:53
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