重点讨论了眼镜片(透镜)中心透射比标准测量装置测量不确定度的来源，详细分析各不确定度分量的评定。
We discuss the sources of the measurement uncertainties of standard equipment for spectacle lens (lens) center transmittance and analyze each components of uncertainty.
本文介绍齿轮螺旋线标准装置的测量原理、结构及结果。
This paper describes the measuring principle, construction and results of the helix standard system for testing gears.
在采用标准孔板节流装置测量天然气流量时，盖压波动对测量精度影响甚大。
The differential pressure fluctuation has a quite great influence upon the measure precision in measuring natural gas flow rate with the measuring device by use of standard orifice plate.
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