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防火布料 阻燃面料
Mon, 11 Nov 2024 08:27:35 +0000
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條干均勻度的指標(biāo)
http://www.caifengbao.com/archives/579
Fri, 08 Jan 2021 05:47:27 +0000
http://www.caifengbao.com/archives/579
1．平均差系數(shù) 指各數(shù)據(jù)和平均數(shù)之差的絕對(duì)值的平均值占數(shù)據(jù)平均數(shù)的百分率，計(jì)算公式為：
AAAGFREGRTTHR
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