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A new method to estimating standard deviation of the strength of concrete
Author(s): 
Pages: 111-115
Year: Issue:  3
Journal: JOURNAL OF HEBEI INSTITUTE OF TECHNOLOGY

Keyword:  验收批强度标准差以前和当前数据无偏估计;
Abstract: 给出了一种混凝土验收批强度标准差的无偏估计方法,该方法能充分利用以前和当前的全部概率信息得到高置信度的强度标准差估计量,与传统方法比较更接近于母体真值.
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