论文部分内容阅读
每一个试验结果不仅需要正确地表达出数值的大小,还应能正确反映出该数值的精确程度。为此,要求我们能根据计量设备的精度确定测量值的精度和正确使用有效数字运算法则算出试验结果,并运用有效数字表达方法来表示每一个试验结果。 一、有效数字的表示方法 有效数字是测定时,所用的计量仪器和试验方法的准确度能够达到的数字。在有效数字中,只有最末一
Each test result not only needs to correctly express the magnitude of the value, but also accurately reflects the accuracy of the value. For this reason, it is required that we can determine the accuracy of the measured value according to the accuracy of the measurement equipment and correctly use the effective digital algorithm to calculate the test results, and use effective digital expression methods to represent each test result. First, the effective number of representation method The effective number is the number of measurement instruments and test methods used to determine the accuracy can be achieved. Among the available figures, only the last one