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煤質(zhì)分析方法的精密度用什么指標(biāo)表示?

2016-01-15  來(lái)自: 鶴壁市華維科力煤質(zhì)儀器有限公司 瀏覽次數(shù):3329

煤質(zhì)分析方法的精密度以重復(fù)性限(同一煤炭化驗(yàn)室的允許差)和再現(xiàn)性臨界差(不同化驗(yàn)室的允許差)來(lái)表示。重復(fù)性限指在同一實(shí)驗(yàn)室中,由同一操作者,用同一臺(tái)/《/輿對(duì)同一分析試驗(yàn)煤樣,于短期內(nèi)所做的葷復(fù)測(cè)定所得結(jié)果間犛值(在95%概率下)的臨界值。

再現(xiàn)性臨界差指在不同實(shí)驗(yàn)室中,對(duì)從煤樣縮制到最后階段的同一煤樣中分取出來(lái)的、具有代表性的部分所做是重復(fù)測(cè)定,所得結(jié)果的平均值間的差值(在95%概率下)的臨界值,


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