测量误差是计量测试的一个基本问题,受到了日益广泛的重视,长期以来,人们又比较习惯于应用系统误差的概念,近年来,大家普遍认为,“不确定度”似比“误差”更为合适,通常所谓的误差,实际上都是指测量结果的可能误差范围或误差限即“不确定度”。而测量误差是指测得值与真值之差。严格来讲,被测量的绝对值永远是未知的,但随着科技的发展,测试方法和手段的不断改进,人们对真值的认识逐渐加深,即越来越接近 Measurement error is a basic problem of measurement test. It has been paid more and more attention. For a long time, people are more accustomed to applying the concept of systematic error. In recent years, it is generally accepted that “uncertainty ” “More appropriate, usually the so-called error, actually refers to the measurement of the possible error range or error limit ” uncertainty ". The measurement error refers to the difference between the measured value and the true value. Strictly speaking, the absolute value of the measured value is always unknown, but with the development of science and technology, continuous improvement of testing methods and means, people’s understanding of truth gradually deepened, that is, closer and closer