The probability distribution function and the characteristic value of the curvature ductility factor are presented.
近似得出曲率延性系数的概率分布函数和特征值。
Conclusions: 3d-cpa can reflect the blood distribution of thyroid nodules lesion and the characteristic of the distribution has certain guide value on judge thyroid cancer.
结论：3d - CPA能反映甲状腺结节性病变的血流分布状况，且其分布特征对判断甲状腺癌有一定的指导价值。
The frequency distribution of characteristic value of the male cones and pollen is abnomal.
杉木雄球花及花粉特征值频率分布为偏态分布。
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