This components of parameter variance depends on the sample size.
参数方差的这一组成部分依赖于样本容量。
Some concepts, such as domain parameter variance and domain parameter variance function, are introduced.
提出了域参变量、域参函数等概念；
The paper discusses the dynamical characteristic of the B-contactor structure, which is a primary analysis and study of the sensitivity of the design parameter variance.
以直动式B系列交流接触器为例，就其结构的动态特征对设计参数改变的灵敏程度进行分析。
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