在线词典周三径一圆周周长与直径的比率为三比一。系古代关于圆周率的不太精确的估算。拼音zhōu sān jìng yī解释圆周周长与直径的比率为三比一。系古代关于圆周率的不太精确的估算。英文释义when the circumference is three, the diameter is (approximately) one