极限与配合基础第3部分:标准公差基本偏差数值表
根据中心极限定律以及t分布,95%置信区间的范围基本等于:sample mean
附件2 样本量字码 sample size code
table 1
plans for normal inspection 样本 大小 大小 lot or batch size Ⅰ
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