功率吸收的计算

请教各位一个问题。我在使用FEKO计算这样一个模型：半波偶极子天线旁边有一立方体的有耗介质，目的是要计算该立方体吸收了多少功率。在out文件中发现了两个关于功率损耗的数据且不一致。如下所示：
                                                       POWER BUDGET IN THE DIELECTRIC (in Watt)
      Integration of the normal component of the power density vector pointing into the
      respective medium over the surface of the dielectric body (MoM surface equiv. princip.)
      or volume integral for the corresponding medium (FEM and MoM volume equiv. princip.)
         medium        power dens.         metallic      network        waveguide                  source                 power loss
                               integral                   losses        losses         backw. power              power                 in medium
                   0          unknown     0.00000E+00   0.00000E+00   0.00000E+00        1.00000E+00             unknown  
       lossy_medium  1.33124E-01   0.00000E+00   0.00000E+00   0.00000E+00   0.00000E+00    1.33124E-01
另外一个是：
                              SUMMARY OF LOSSES
          Metallic elements:                          0.0000E+00 W
          Dielectric (surface equiv. princ.):         1.7737E-01 W
          Dielectric (volume equiv. princ.):          0.0000E+00 W
          Dielectric (FEM region):                    0.0000E+00 W
          Mismatch at feed:                           0.0000E+00 W
          Non-radiating networks:                     0.0000E+00 W
          Backward power at passive waveguide ports:  0.0000E+00 W
          Backward power at passive modal ports:      0.0000E+00 W
                                                     -------------
                Sum of all losses:                    1.7737E-01 W
          Efficiency of the antenna:                     82.2631 %
          (based on a total active power:             1.0000E+00 W)
我想问的是这两个数据（红色）为什么有差别?选取哪个才是材料所吸收的功率? 多谢！