随着经济的不断发展和对外贸易的逐步扩大,计量校准工作的需求也越来越多,计量校准工作的重点难点——不确定度分析也越来越被更多人重视,文章以20L二等标准金属量器校准的不确定度评定为例,对A类、B类评定的各项不确定度分量进行全面分析,为正确开展不确定度评定工作提供参考。 With the continuous development of economy and the gradual expansion of foreign trade, there is an increasing demand for metrology and calibration work. The key and difficult point of metrological calibration - uncertainty analysis is also paid more and more attention by people. And other standard metal measuring instrument as an example to evaluate the uncertainty of each type of A, B of the components of a comprehensive analysis of the uncertainty for the correct assessment of uncertainty to provide reference.