1. Dai Zhen (AD.1723~1777), famous scholar of the Qing Dynasty, deleted the term " Mi-Lu " and turned the original into two methods of calculating the area of a ring;
清代著名学者戴震，删去密率二字而将术文校改为环田面积的两种算法；
2. Dai Zhen (AD.1723 ~ 1777), famous scholar of the Qing Dynasty, deleted the term " Mi-Lu " and turned the original into two methods of calculating the area of a ring;
清代著名学者戴震，删去密率二字而将术文校改为环田面积的两种算法；