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桑园内南方刀螂卵块属聚集分布,在桑树上的分布高度属对数正态分布。用序贯抽样技术探讨了最适抽样数和采收指标。
In the mulberry garden, the eggs of the Chinese knives are congregated and the distribution on the mulberry tree is lognormal distribution. Using sequential sampling technique to explore the optimum number of samples and harvest indicators.