correlationn coefficient and coefficient of determination 翻译

correlationn coefficient and coefficient of determination 翻译 英语翻译Residual coefficients are primarily the transform coefficients of the difference between a macroblock and its motioncompensated version,after they have been quantized and entropy coded.Our experiments have shown that theseresidual coeffic 摩擦系数u和物体接触的表面积有关么Ff=uFnDoes the coefficient of friction depend on surface area?如题.为什么我做的实验中u是有变化趋势的（从大变小再变大,除了一个）?而且如果无关,和什么有关.coeffic