In this paper we give the optimal error estimates of Petrov-Galerkin finite element (PGFE) methods for the initial-value problem of nonlinear Volterra integro-differential equations.
在本文中 ,对于非线性维他里积分微分方程的初值问题 ,我们给出了PGFE方法的最优误差估计 。
Fugacity coefficients of the vapor phase were calculated from the virial equation.
用维里方程计算汽相的逸度系数 ,分别用vanLaar方程、Wilson方程、NRTL方程和UNIQUAC方程等活度系数方程对沸点进行了关联 ,得到了各方程的参数 ,并对各方程的计算结果进行了比较。
In the present paper, the Virial equation of molecular aggregation is used for the vapor phase, and the Wilson equation modified by the theory of molecular aggregation.
本文对汽相应用了分子聚集型维里方程,而液相则采用UNIQUAC活度系数方程和由分子聚集理论改进的Wilson活度系数方程,其汽相平衡的计算结果精确。
Based on the intermolecular force calculation the Virial equation was used to fit isothermal adsorption curves.
为了研究液态水对煤吸附甲烷影响的机理,进行了不同煤级干燥煤样、平衡水煤样和注水煤样等温吸附实验,基于分子间作用力对液态水影响机理进行分析,并用维里方程拟合等温吸附实验结果来验证。