文章通过对测量系统及其不确定度的研究，分别基于测量系统分析和误差溯源对测量系统进行了不确定度评定和精度保证。
The paper studies the measurement system and uncertainty. Based on the analysis of system and the source of error, the paper does the uncertainty evaluation and accuracy undertaking.
详细分析了杨氏模量的测量不确定度，把钢丝长度变化的测量作为不等精度测量处理，从而得到更为合理的结果。
The data processing of the change of the steel-wires length is treated as unequal-accuracy and a more reasonable result is obtained.
对1999年和2003年采用不同测量光路情况下可见光波段低温辐射计高精度光辐射定标测量结果及其不确定度进行了比较。
The results of highly accurate optical radiation calibration of cryogenic radiometer have been compared between year of 1999 and 2003.
分析影响系统测量精度的各项因素，完成系统不确定度的评定。
The article Analyses the factors of influence system measuring accuracy and en the evaluation of system uncertainty is completed at last.
分析影响系统测量精度的各项因素，完成系统不确定度的评定。
The article Analyses the factors of influence system measuring accuracy and en the evaluation of system uncertainty is completed at last.
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