For more information about activity tracing and propagation, see activity tracing and propagation for End-To-End Trace Correlation.
有关活动跟踪和传播的更多信息，请参见端对端跟踪关联的活动跟踪和传播。
Based on correlation coefficients and principal component analysis, fe and al were selected as the concentration normalizer for the different trace metals.
由相关系数和主成份分析，选择铁和铝作为沉积物中痕量金属浓度的均一化元素。
Correlation matrix and cluster analysis showed that the trace and major elements, trace and trace elements in coal are closely related.
相关矩阵及聚类分析表明，煤炭中微量元素与基质元素之间、微量元素之间有着密切的依存性。
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