Apparently there is also a correlation between the length of skirts and the donjons index.
表面上这也有相关性，在裙子长度和地牢指数之间。
Index correlation and existing of redundant index are the important problem during index system building.
指标相关性和冗余指标的存在一直都是体系构建工作中的重要问题。
Objective: To study the correlation of pulse pressure index (PPI) and pulse wave velocity (PWV).
目的：研究脉压指数(PPI)与脉搏波速度(PWV)的相关性及对动脉硬化的评价价值。
The index of depression severity is positive correlation with the average level of cortisol.
抑郁严重度指数与皮质醇平均水平呈正相关。
The index of depression severity is positive correlation with the average level of cortisol.
抑郁严重度指数与皮质醇平均水平呈正相关。
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