Results was stable and repeated during 3 hours, coefficient of variance (CV) was less than 6 percent.
检测结果3小时内稳定，重复测定变异系数小于6％。
参考来源 - 比色法羟自由基测定条件的优化与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Classical statistical analyses show significant spatial variability of soil erodibility K values at a scale of small watershed, the variance coefficient of which is 39.94%.
经典统计学方法分析表明，在小流域尺度下土壤可蚀性K值存在很强的空间变异性，其变异系数达39.94%。
The weight matrix is replaced by using weight coefficient, and avoids calculating inverse matrix of the error variance matrix.
用计算加权系数的方法代替了原来的计算加权矩阵，从而避免了求解滤波误差方差阵的逆矩阵。
In comparison with BP method and RBF method, the SVM method is proved to be the best in terms of absolute error, relative error, correlation coefficient and variance.
模拟结果与BP网络方法、R BF网络方法相比，在绝对误差、相对误差、相关系数以及数据方差方面都是较优的。
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