北京市海淀区HFRS病人的分布为非随机分布，具有时间和空间聚集性分布的特征。
HFRS patients in Haidian district of Beijing were not distributed randomly, and the temporal and spatial clusters were obvious.
西格玛黑带应能识别在各种可能原因的列表中，哪一个原因最合适解释在回归残差中出现的非随机分布。
The Six Sigma Black Belt should be able to identify which cause on a list of possible causes will most likely explain a non-random pattern in the regression residuals.
研究了一类非零键渗透率满足均匀分布的随机多孔介质逾渗模型。
A percolation model of random porous media, with its nonzero bonds obeying the uniform distribution, is researched in this article.
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