Results Actual use of the method for estimating sample size and the relationship between effect factors and sample size were illustrated by a example of case control family study of liver cancer.
结果用实例说明了病例对照家系设计中样本含量估计方法的应用与影响因素和样本含量的关系。
With increasing sample size, random variations of the effect are smaller.
随着样本量的增加，作用的随机变化减小。
The essay discusses the accuracy of area method of thermal quantitative analysis and the effect of sample particle size with different materials on thermal analysis.
前言： 研究了差热定量分析面积法的准确性和不同物料样品粒度对定性差热分析的影响。
The essay discusses the accuracy of area method of thermal quantitative analysis and the effect of sample particle size with different materials on thermal analysis.
前言： 研究了差热定量分析面积法的准确性和不同物料样品粒度对定性差热分析的影响。
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