国家计量技术规范 meaning in Chinese
jjf
Examples
- This article evaluates the uncertainty of measurement results of measuring spherical metal tank capacity in accordance with jjg642 - 1990 v . r . of spherical metal tank capacity arid jjf1059 - 1999 evaluation and expression of uncertainty in measurement
摘要依据jjg642 - 1990 《球形金属罐容量国家计量检定规程》和jjf1059 - 1999 《测量不确定度评定与表示国家计量技术规范》 ，对环形金属罐容量的测量结果不确定度进行评定。