curvilinear correlation coefficient
curvilinear correlation coefficient
曲线相关系数
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Moreover, the fitting degree of curvilinear regression equation is tested by correlation index, in stead of correlation coefficient which has been unsuitably used for testing in similar works.
此外，用相关指数来检验曲线回归方程的拟合程度，而不采用在类似的研究中用相关系数来检验曲线回归这一不合适的方法。
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