http://m.caifengbao.com 防火布料 阻燃面料 Mon, 11 Nov 2024 08:27:35 +0000 zh-CN hourly 1 https://wordpress.org/?v=4.5.32 條干均勻度的指標(biāo) http://m.caifengbao.com/archives/579 Fri, 08 Jan 2021 05:47:27 +0000 http://m.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:

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