下面的提示该怎样改？

只看该作者 · 2012-8-23 19:47

Violation       Net FOUT is broken into 3 sub-nets. Routed To 0.00%
   Subnet : R20-2
   Subnet : U4-10
   Subnet : U3-3
Violation       Net DEL is broken into 2 sub-nets. Routed To 0.00%
   Subnet : U4-35
   Subnet : JP1-7
Violation       Net CLR is broken into 2 sub-nets. Routed To 0.00%
   Subnet : U4-34
   Subnet : JP1-8
Violation       Net +3.3V is broken into 4 sub-nets. Routed To 0.00%
   Subnet : C5-1
   Subnet : U1-2
   Subnet : C4-1
   Subnet : COM1-1
我刚布局好，还没连线，进行DRC检测，出现 “is broken into 2 sub_nets”,这是什么意思？该怎样改正，谢谢