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有效数字规则是记录和处理试验测定数据必须依从的基本规则。正确理解和熟练运用有效数字规则,是一切从事和应用试验测定数据的工作人员必不可缺少的一项重要基础知识和技能。尤其在用计算机处理数据日益普及的今天,对理化检验工作者来说,有效数字的正确运用就更不能予以忽视。本文拟从误差的角度对此进行一些分析,以期对同行能有所裨益。一正确记录和计算试验数据的意义理化检验人员的根本任务就是如何解决好被测组分的定量问题。但是要绝对准确地确定出某种组分的含量,是无论如何都不可能做到的。因为我们的数据是通过仪器测量得到的。由于测试仪表和量具分辨能力的限制,以及测视人员的技巧、整个测量过程中理化作用的影响,我们得到的只能是具有一定误差的客
Valid digital rules are the basic rules that must be followed to record and process test measurements. Correct understanding and proficiency in the use of effective digital rules is an essential basic knowledge and skill that is indispensable to all workers engaged in and applying test-determination data. Especially in the day when computers are used to process data, the correct use of effective figures can not be neglected even to physicochemical examiners. This article intends to make some analysis from the perspective of error, in the hope that it will be beneficial to its peers. A correct record and calculation of the significance of the experimental data Physical and chemical inspection personnel’s fundamental task is how to solve the quantitative determination of the measured components. However, it is by no means impossible to determine the exact content of a certain component. Because our data is measured by the instrument. Due to the limitations of test instruments and measuring tools, as well as the skills of the inspectors and the physical and chemical effects of the whole measurement process, we can only get a certain error