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徑一周三
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徑一周三
jìng yī zhōu sān
古算学计算圆周率的近似比。谓圆径与圆周之比为一比三。语出《周髀算经》卷上句股圆方图汉赵爽注:圆径一而周三。后因以比喻两者相比差距甚大。
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更新时间:2026/11/1 2:01:31