有效数字概念的局限性

The limitations of the concept of significant digits

通过分析按有效数字定义近似处理标准误差前后引起包含测量结果真值概率的变化 ,指出现行有效数字概念有一定的局限性 ,明确了为克服这个局限性 ,不确定度有时应采取两位数表示 .

The limitations of the concept of significant figure is pointed out by the discussion of changes of the probability of truth value of measurement.In order to overcome the limitations the inaccuracy should adopt two digits some times.