高就是由於沒加負載，加了負載就沒那麽高了，加了還那麽高才是有問題。因為所有電源都有內阻。

來源: 原上草2017 於 2018-11-29 22:38:44 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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