For assessment effect of cloud seeding for agriculture, contribution coefficient of precipitation to crop production was obtained using integral regression of precipitation.

为评估增雨对农业的影响，利用自然降水对农作物产量贡献的积分回归，获得降水对农作物贡献系数。

youdao

The influence of stochastic factor and interwork effect couldn t been though about in tradition analysis and calculation of the contribution coefficient of irrigated benefit.

传统的灌溉效益分摊系数分析计算时未考虑随机因素与交互效应的影响，本文针对这一问题提出相应的数理统计分析方法。

youdao

Several Methods of Calculation Break-Even Point are introduced in the paper, with detailed analysis, illustration and inquisition into Contribution Margin Method and coefficient Methed.

本文介绍了预测保本点的几种方法，着重对贡献毛益法、系数法进行详细的分析、说明、探讨，并对它们适用范围进行归纳汇总。

youdao