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基于多项分布理论 ,建立了组合取样方差与取样总体中各子区的大小及其组分含量之间的关系和计算公式 ,探讨了组合取样常数的物理意义 .以颗粒物质为例 ,探讨了组合取样的逻辑质量单元的概念及其意义 ,为确定组合取样中的份样质量提供了理论依据 .本文对于完善组合取样误差理论 ,保证组合取样的质量均具有重要意义
Based on the theory of multiple distributions, the relationship between the sampling variance and the size of each sub-region and the content of the components in the sampling population is established, and the physical meaning of the sampling constant is discussed. Taking the particulate matter as an example, The concept and meaning of the logical sampling unit for sampling combined provide a theoretical basis for determining the sample quality in the combined sampling.This paper is of great significance to improve the theory of combined sampling error and ensure the quality of the combined sampling