有幾個聽過真空管的？裝過的？比較過Si/Ge/Williams產品的？

來源: chinomango 於 2014-06-17 13:45:53 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

真空管今非昔比，知道為啥？

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