A new method of estimating concrete strength representative value by means of a confidence lower limit is presented in this paper, and one-side tolerance factor expression is given.
提出了用置信下限作为混凝土检验批强度标志值的估计量的新方法，给出了单侧容限系数的表达式。
A small sample method for testing fatigue crack growth rate curve of steel was presented in this paper using a formula of two-dimensional one-side tolerance factor.
应用二维单侧容限系数公式，提出了一种测定金属材料疲劳裂纹扩展速率的小样本方法。
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