一个自定义物性the entropy of fusion缺失

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*   WARNING IN PHYSICAL PROPERTY SYSTEM
      VAN KREVELEN PROPERTY ESTIMATION IS MISSING PARAMETER VALUES
      FOR GROUP NUMBER (183) IN SEGMENT S-SEG.
      THE ENTROPY OF FUSION HAS BEEN SET TO ZERO FOR THIS GROUP.


      THE VISCOSITY TEMPERATURE FUNCTION HAS BEEN SET TO ZERO FOR THIS GROUP
请求前辈指导一下~~敬谢~