protel 99se中铺铜，设置grid size 20mil ， track width 22mil，连接网络为GND，铺完后做DRC， 报错信息 “ Processing Rule : Width Constraint (Min=30mil) (Max=30mil) (Prefered=30mil) (Is on net GND )
Violation Polygon Arc (8983mil,9528mil) TopLayer Actual Width = 22mil
Violation Polygon Arc (8983mil,9528mil) TopLayer Actual Width = 22mil
Violation Polygon Arc (8673mil,9798mil) TopLayer Actual Width = 22mil 。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。” 请问大家这是什么问题呀，如何解决？不胜感激！ | 
