{"id":4738,"date":"2016-07-06T06:03:00","date_gmt":"2016-07-05T22:03:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=4738"},"modified":"2023-10-23T11:31:57","modified_gmt":"2023-10-23T03:31:57","slug":"sigma-n-1","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2016\/07\/sigma-n-1\/","title":{"rendered":"\u70ba\u4ec0\u9ebc\u7d71\u8a08\u7684\u6a23\u672c\u6a19\u6e96\u5dee\u8a08\u7b97\u8981\u9664(n-1)\u800c\u6bcd\u9ad4\u6a19\u6e96\u5dee\u5247\u9664n\uff1f"},"content":{"rendered":"

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