在修改玻璃量器检定规程中,对液面读数方法有争论。争论焦点是该读哪一条液面特征曲线,或者说以哪一条液面表观特征曲线刻度量器误差最小。我们从光学的角度分析了玻璃量器各液面表观特征曲线的形成原因,并用实验加以验证,找出实际的液面线及其近似表征。这对量器液面的刻度基准线位置的确定具有重要的作 In revising the glassware verification protocol, there is a debate about the surface reading method. The focus of debate is which one of the liquid level characteristic curves to read, or which one of the liquid surface apparent characteristic curve gauges has the smallest error. From the optical point of view, we analyzed the formation reason of the apparent characteristic curve of each level of glassware and validated it with experiments to find out the actual liquid surface line and its approximate characterization. It is important to determine the position of the scale reference line of the gauge liquid