Meanwhile, by using interval estimation instead of the conventional point estimation, the lower and upper confidence limits, the confidence intervals of structure concrete strength are derived.

运用区间估计方法代替传统的点估计方法，导出结构混凝土强度的置信上限、下限和置信区间。

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And for those point estimates, their distributions or approximate distributions are obtained. The confidence upper limits of the blind area radius Rm are obtained by using the classical approach.

对于这些估计，给出它们的分布或近似分布，用经典方法可得到盲区半径的置信上限。

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And for those point estimates, their distributions or approximate distributions are obtained. The confidence upper limits of the blind area radius Rm are obtained by using the classical approach.

对于这些估计，给出它们的分布或近似分布，用经典方法可得到盲区半径的置信上限。

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