我照CATIA教程上先打开一个PART文档,点钣金件识别命令(WALLS RECOGNITION),选面时就出现一个对话框:You are trying to create a sheetmetal. part in the sheetmetal design workbench. sheetmetal parts can only be created in the generative sheetmetal design workbench.please slelect generative sheetmetal design workbench to create your new part.
这是什么意思啊?