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比率估计量
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比率估计量
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理学
数据收集模式
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ratio estimator
比率估计量
利用目标变量与辅助变量之间的比值关系,对目标变量的总体特征进行估计的估计量。又称比估计量、比率估计、比估计。
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composite foundation with flexible piles
composite foundation with long and short piles
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