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1.文中有一段 :“根据SH/T0251-1933《石油产品碱值测定法》的规定 ,对样品的试验仅做两次平行测定。因此 ,不用考虑A类不确定度 ,它包含在测试仪器分辨率和稳定性中。”所谓A类不确定度 ,按定义系指用统计方法所获得的不确定度。这一段说明是否就是在整个不确
1. There is a paragraph in the article: “According to SH / T0251-1933” Determination of base oil value of petroleum products, “the provisions of the sample test only two parallel determination.Therefore, regardless of the type A uncertainty, which is included in the test equipment Resolution and stability. ”The so-called Type A uncertainty, by definition, refers to the uncertainty obtained by statistical methods. This paragraph shows whether it is in the entire uncertainty