Analyzing the error of ohmmeter in measuring resistance, the measurement formula of uncertainty is derived, and the best measuring range of ohmmeter is obtained.
从分析实际欧姆表测电阻全过程的误差出发，导出测量不确定度的算式，最后得出表尺最佳段范围。
2
The major tree measurement factors include the original measurement factors and their derived factors.
树木主要调查因子是指树木的直接测量因子及其派生因子。
3
Finally, the comparison between standard values and measurement values derived from the new instrument for the standard coals is carried out.