ABAQUS热传导，材料热传导系数各项正交，怎么在软件里面设置
以下是软件运行中断的错误报告：
Anisotropic material properties without a local orientation system have been defined for 4791 elements. Anisotropic material properties must be defined in a local orientation system. The elements are identified in element set ErrElemAnisotropicMaterial.
Analysis Input File Processor exited with an error.
软件提示编辑材料方向，但是正交的材料如何选择
