求翻译：数据单位根检验的原假设是存在单位根，但个体的单位根不同，通过先计算各个单元的统计量，然后再构造面板统计量进行检验，同时Fisher-ADF检验还考虑了单元之间的相关性。滞后项的选择仍然是以AIC为标准，对每个个体的滞后项数进行选择。单位根检验结果如表2。是什么意思？

Data unit root test the null hypothesis that there is unit root, but the root of the individual units is different then constructed by first computing the statistics of each unit, the panel statistic inspection, fisher-adf test also takes into account the correlation between the unit sex. The choice

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Data unit root is the null hypothesis of unit root tests exist, but the individual units of different, by first calculating statistics for each unit, and then constructed panel testing statistics, while Fisher-ADF test also take into account the dependencies between modules. Lag choice remains to AI