This method is suitable for the system with variable temperature and pressure. Comparing with the section correlation, the number of parameter is markedly reduced.
压力项因子的引入，使得该方法能够适用于温度、压力变化的体系。
2
Comparing with the variable bandwidth storage pattern in common use, the computer storage unit of the proposed method can be reduced further. Moreover, the routine statements are simpler and clearer.