万博全站官网app-万博全站官网登录手机版
時間:2023-02-08 來源:本站點擊:52447次
????̫ƽ??֤ȯһ???б???Ϊ????????????ҵ????????걸???߱?????????????ơ???оƬ??Ӧ??ȱ????ȫ??????ѹ?ı????£??й????????ڵ?????????????˹????걸?IJ?ҵ?????ơ????Ź???Ʒ????????Դ?????ܻ??????Ľ??ף???Ʒ????Ʒ??????Ľ?һ?????̽????????й????????????????????Һ͵????, 道理很简单:磁性物质可以记录信息,但一块磁铁啥也记录不了。即便磁性物质被用作机械部件,只要不与电路相连,有信息也传递不出去。。
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