In this paper, the cubic equation is simplified into a quadratic equation, thus greatly simplifying the calculation.

本文将三次方程简化为二次方程，使计算得到很大简化。

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Then the steam extraction coefficients can be got by solving the equation, furthermore the exergy efficiency of the heaters. So the calculation procedure can be simplified.

解该矩阵方程可得到符合平衡关系的各级回热加热器抽汽系数，并在此基础上求得各级加热器的效率，从而简化了运用分析方法求解抽汽系数的过程。

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Then the steam extraction coefficients can be got by solving the equation, furthermore the exergy efficiency of the heaters. So the calculation procedure can be simplified.

解该矩阵方程可得到符合平衡关系的各级回热加热器抽汽系数，并在此基础上求得各级加热器的效率，从而简化了运用分析方法求解抽汽系数的过程。

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