用实验方法确定经验公式时，回归方程中用最小二乘方法求得的待估参数的估计值往往是一个很长的数。
When determining empirical formula with test method, estimation value of estimated parameter in regression equation which is obtained with least square method always is a long number.
本文就实际园柱体的测得数据，推导了它的最小二乘方轴线方程。
On the basis of the measured data for the actual cylinder, a least square axis equation is drawn in this paper.
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