由于制造工艺和实际工作环境的影响，实际电子线路中的元器件及输入参数与其标称值之间总是存在着随机误差。
With the influence of manufacture technology and practical working environment, there are random errors between the nominal value and the component or input parameters in electronic circuits.
由于制造工艺和实际工作环境因数的影响，实际电子线路中的元器件及输入参数与其标称值之间总是存在着随机误差。
Due to the influence of manufacture technology and practical working environment, there are random errors between the nominal value and the component or input parameters in electronic circuits.
在电表改装实验中，由于电阻计算值与标称值不一致，从而引起实验结果存在一定的误差。
In the experiment of remaking meters there may be errors in the experiment result because of the disagreement of circulating value of resistance and standard value.
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