By taking the volume measurement of vertical metallic tanks as an example, the evaluation of standard uncertainty and the calculation of expanded uncertainty are described in detail.
本文结合立式金属罐的容量测量实例，详述了标准不确定度的计算及扩展不确定度的获得过程。
The various uncertainty items are calculated to compose the total measurement uncertainty and to get the expanded uncertainty. The uncertainty of DCICAR under one solar constant is 0.11%.
论文分别估算出产生DCICAR测量不确定度的各项分量的大小，得到DCICAR的合成标准不确定度及扩展不确定度，DCICAR在一个太阳常数下的测量不确定度为0.11%。
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