本帖最后由 史锦顺 于 2014-3-4 10:10 编辑
回复 26# 刘彦刚
- 现将VIM3涉及不确定度与真值关系的条款(这些条款2012版与2008版相同),复印如下,不是打字,而是复印,保证不错一个符号。令人惊讶的是,在《JJF1001-2011》中居然回避“真值”二字,把“真值”改为“量值”。此事发生在信仰辩证唯物论的国度里,岂非咄咄怪事。要注意,VIM2008版问世三年后,JJF竟然如此,这就不全是迷信洋人的问题了。我们不禁要说:做为《JJF1001-2011》主要起草人的第一人的叶德培先生,国际规范都不得不承认的真值,你(们)竟敢抹掉,太放肆了! - 2.26 (3.9) measurement uncertainty non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used NOTE 1 Measurement uncertainty includes components arising from systematic effects, such as components associated with corrections and the assigned quantity values of measurement standards, as well as the definitional uncertainty. Sometimes estimated systematic effects are not corrected for but, instead, associated measurement uncertainty components are incorporated. NOTE 2 The parameter may be, for example, a standard deviation called standard measurement uncertainty (or a specified multiple of it), or the half-width of an interval, having a stated coverage probability. - 2.36 coverage interval interval containing the set of true quantity values of a measurand with a stated probability, based on the information available NOTE 1 A coverage interval does not need to be centred on the chosen measured quantity value (see JCGM 101:2008). NOTE 2 A coverage interval should not be termed “confidence interval” to avoid confusion with the statistical concept (see GUM:1995, 6.2.2). NOTE 3 A coverage interval can be derived from an expanded measurement uncertainty (see GUM:1995, 2.3.5). - 2.37 coverage probability probability that the set of true quantity values of a measurand is contained within a specified coverage interval NOTE 1 This definition pertains to the Uncertainty Approach as presented in the GUM. NOTE 2 The coverage probability is also termed “level of confidence” in the GUM. - |