The paper points out that the finish error of blades does not conform to normal distribution law, hence the error probability distribution function is derived for this specific process.
本文指出了叶片精加工的误差不符合正态分布规律，并推导了叶片精加工的误差概率分布函数。
It is verified that in the function of normal distribution can be expressed the density law of the rock structure crevice group and the calculation error is minor.
证明用正态分布函数能表示岩石构造裂隙组合的疏密规律，且计算误差小。
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