Result: Uncertainty in each ponderance were analyzed and put forward combinedstandarduncertainty resides of the method.
结果：量化各不确定度分量，提出了该法的合成不确定度评估结果；
2
When these input quantities were correlative, the combinedstandarduncertainty could not calculated if the correlation coefficient was unknown.
当输入量之间的相关性存在时，必须知道了相关系数，才能计算合成标准不确定度。
3
But if we are not sure about whether the effective freedom degree is more than 10, it is doubtful that selecting expanded uncertainty as twice as combinedstandarduncertainty.