相关疑难解决方法(0)

我有一个数据框如下：

       Serial_number Amplification Voltage
(...)
    51    912009913    50.8258    335.965
    52    912009913    54.3855    337.966
    53    912009913    58.3014    339.959
    54    912009913    62.6758    341.956
    55    912009913    67.5537    343.965
    56    912009913    72.9996    345.965
    57    912009913    79.1489    347.964
    58    912009913    86.1111    349.965
    59    912009913    94.0453    351.957
    60    912009913    103.2320    353.957
    61    912009913    113.9780    355.964
    62    912009913    126.5830    357.964
    63    912009913    141.6830    359.963
    64    912009913    160.0800    361.962
    65    912009913    182.8440    363.955
    66    912009913    211.9870    365.957
    67    912009913    250.4290    367.965
(...)
    119    912009897    50.8925    329.968
    120    912009897 …