周三径一 zhōusānjìngyī three to one ratio Definitions Defs Origin Strokes Stroke Words Sentences Sents 周三径一 周三徑一 zhōusānjìngyī three to one ratio A traditional Chinese estimation of pi, stating that the circumference of a circle is approximately three times its diameter
周三径一 周三徑一 zhōusānjìngyī three to one ratio A traditional Chinese estimation of pi, stating that the circumference of a circle is approximately three times its diameter
