This paper analysed the uncertaities of voltmeter in calibration by potentiometer. 分析了用电位差计检定电压表时的不确定度。
The certified value and uncertainty were based on the analytical results of eight labs by non-dispersive infra-red method. 其标准值和不确定度由多家实验室用非分散红外法进行分析测定,并经数理统计处理后确定的。