At last we put some problems which are not consider in OEC and ADC, analyse the advantages and disadvantages between above two methods. The ADC method excel the OEC method is the result.

• 最后通过一个具体的算例,比较分析了两种方法的优缺点,提出了一些两种方法中未考虑的问题,得到的结论是ADC方法要优于OEC方法。