All indices indicated that its distribution was a negative binominal distribution of an aggregated pattern in all densities. Aggregation intensity of of Parasa consocia increased with increasing densities. 结果表明,褐边绿刺蛾茧在一切密度下空间分布型均为聚集型的负二项分布,且聚集强度随密度增加而增强,个体间相互吸引,分布的基本成分为个体群。
Methods Binominal distribution ( p+ q) n is simulated in a method of mathematical model with χ 2 in a proper test. 方法:用二项分布(p+q)n数学模型拟合,用χ2进行配合适度检验。
The probability of available equipment in production systems is usually referred to the binominal distribution. 在生产系统中,设备作业的概率服从于二项式分布。