多物理场仿真电磁场热损耗真空定义报错

Error: incomplete material specifications
      the Density of 23-0/Vacuum assigned to 23-0/component1:solid1 has not been specified
      the ThermalHeatCapacity of 23-0/Vacuum assigned to 23-0/component1:solid1 has not been specified
      the ThermalConductivity of 23-0/Vacuum assigned to 23-0/component1:solid1 has not been specified
      the Density of 23-0/Vacuum assigned to 23-0/component1:solid3 has not been specified
      the ThermalHeatCapacity of 23-0/Vacuum assigned to 23-0/component1:solid3 has not been specified
      the ThermalConductivity of 23-0/Vacuum assigned to 23-0/component1:solid3 has not been specified
报错如上述，不知道如何定义真空的这些参数，没有太明白多物理场的设置，请大神赐教

想问下你用的是EMS的什么区域，是rf还是EMC还是low fre