要使用控制图就要求工程师或分析员为控制图选择样本容量、抽样频率(抽样时间隔或抽样区间)和控制限。
The use of a control chart requires that the engineer or analyst select a sample size, a sampling frequency or interval between samples, and the control limits for chart.
在假设总体服从正态分布的条件下，设计了抽样区间，样本容量和控制限都变化的全变化参数的中位值-极差联合控制图。
Under population follow normal distribution hypothesis, designing combine median-range adaptive control charts with variable sampling interval, variable sample size and variable control limit .
对生丝抽样检验分级理论在柞蚕丝领域中的可行性进行了探讨，并根据这一理论对柞蚕水缫丝标准中纤度偏差指标进行了分析和等级区间划分；
On the basis of the theory, analyses and grade interval classification are conducted on the size deviation indices in the standard for water-reeled tussah silk.
对生丝抽样检验分级理论在柞蚕丝领域中的可行性进行了探讨，并根据这一理论对柞蚕水缫丝标准中纤度偏差指标进行了分析和等级区间划分；
On the basis of the theory, analyses and grade interval classification are conducted on the size deviation indices in the standard for water-reeled tussah silk.
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