Clarifys the composition calculation formula of elastic parameters in this model, these formulas are called the composition equation method of porous media.

阐明了三相组分型弹性孔隙流体介质各弹性参数的组分型计算公式，这些计算公式统称为孔隙介质组分方程法。

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A regressive equation is then given to predict pozzolanic activity index in accordance with ash parameters and cement composition.

本文提出了按粉煤灰理化参数及水泥成分预测抗压强度比的方程。

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On the basis of adjusting the chemical composition of the steel through regression equation, the ability index of the course was raised.

在此基础上，用回归方程调整钢材的化学成分来提高过程能力指数。

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