大幼虫和蛹的分布型均符合负二项分布。
Frequency distribution of each type of large larvae and cocoons conformed to negative binomial distribution.
研究表明其分布型属负二项分布，分布的基本成份是个体群。
The results show that the spatial distribution pattern of stephanitis(S. )sevensoni obeys the common negative binomial distribution, the basic component of spatial distribution pattern is colony.
结果四类投保人和全部保单的理赔次数分布均服从负二项分布。
Results The claim numbers in either groups of policy-holders or in overall policies followed a negative binomial distribution.
基于一种负二项分布的离散需求函数，推导了易腐品利润最大化模型。
According to a kind of demand distribution, which can be represented as a negative binomial distribution, the profit maximization model of those products is deduced.
目的介绍并应用广义负二项分布研究湖北钉螺的分布规律，为定量化研究提供理论依据。
Objective To study the distribution of Oncomelania hupensis with generalized negative binomial distribution, and provide the theoretical support for quantitative study.
利用条件矩的性质特征刻画伽玛分布，负二项分布，广义混合指数分布，广义混合几何分布。
By using conditional moments, the author characterized the Gamma, Negative Binomial, Generalized Mixed Exponential and Geometric distributions respectively.
通过利用传统生物学统计方法和地统计学方法，得出其卵、幼虫和蛹的空间格局均为负二项分布，即聚集分布。
The spatial pattern of egg, larva and pupa are all the aggregated distribution by analysis with the traditional biostatistics and geo-statistics.
给出了负二项分布的分解定理，进一步研究了负二项分布的有关性质及参数的无偏一致估计，以及在流行病学该分布的生物学意义。
Then, we studied a few of properties of negative binomial distribution and the uniformly unbiased estimator of the parameter, and it's biological significances were explained in Epidemiology.
给出了负二项分布的分解定理，进一步研究了负二项分布的有关性质及参数的无偏一致估计，以及在流行病学该分布的生物学意义。
Then, we studied a few of properties of negative binomial distribution and the uniformly unbiased estimator of the parameter, and it's biological significances were explained in Epidemiology.
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