solidworks为什么变行曲面能预览但不显示？

自由飞翔FG

求帮助！！！ file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/Users/250183862/QQ/WinTemp/RichOle/(ANAGI$NJPF8QR4}0P}I)61.jpg 预览的时候
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