讨论了等距抽样中，如何利用辅助信息改进总体平均值的估计，以达到提高估计精度之目的。
This paper deals with the estimation of population mean in systematic sampling by use of auxiliary information in order to improve the accuracy of the estimate.
作者介绍了利用抽样检验标定一批电阻丝片的灵敏系数的平均值及其误差范围的几种统计方法。
Several sampling methods leading to the estimation of mean value and the setting of tolerance interval of the sensitivity coefficients of a lot of strain gages are introduced.
分析和实际模拟表明，在以正态分布进行抽样的前提下，合理选取抽样样本平均值和标准差，可使抽样效率进一步提高。
Theorical analysis and practical simulation indicate that if the samples are of normal distribution, the modelling efficiency can be increased further by using sensible parameters.
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