名词
中文翻译：一阶系数
同义词：
['first-order coefficient', 'principal coefficient']
例句：
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1. The coefficient of friction is a key factor in determining the stability of a system.
摩擦系数是决定系统稳定性的关键因素。
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2. In linear regression analysis, the coefficient of determination (R²) measures the proportion of variance explained by the model.
在线性回归分析中，决定系数
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3. The coefficient of correlation between two variables indicates how much one variable changes when the other changes by a certain amount.
两个变量之间的相关系数表明当一个变量变化时另一个变量会变化多少。