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bd4lb:分享一下,我筛选100个,49U,4兆晶振的体会……1:没有找到,振荡频率,完全一样的晶振~普通晶振,外壳上的标注是4.000,相差几百赫兹都是合格的~(如果晶振外壳的标注,都是4.000000 ,就 .. (2023-01-31 07:15)