如何计算直方图的平均值和标准差简介:This brutal massacre deprived so many lives, torn apart so many happy families, and how many lovely children lost their parents' love and lived on the streets. These damn Japanese devils really deserve to be killed.
This brutal massacre deprived so many lives, torn apart so many happy families, and how many lovely children lost their parents' love and lived on the streets. These damn Japanese devils really deserve to be killed.