Based on the component analysis, a new calculation method for the volume factor of formation crude oil was proposed by cubic equation of state.

在组分分析的基础上，采用立方型状态方程建立了计算原油体积系数的新方法。

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NS equation was adopted as the model of tunnels ventilation, and this model was solved by Cubic Interpolated Pseudo-particle Method.

用NS方程作为隧道通风的数学模型，采用三次插值伪质点法求解ns方程。

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Furthermore, a Cubic Curve-fitting equation deduces and set up. In the end, through a group of actual data, the effect of this new method is validated.

建立了三次拟合曲线方程，通过实际数据的检验，验证了该方法的拟合效果。

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