更多孔设计就最容易让布线器连接。
The more porous the design, the easier it is for the router to make connections.
如果这是合规矩的，布线器就布线到非网格交叉点的中心。
The router only routes to the center of off-grid pin port rectangles, if this is legal.
他们不允许两层布线并且没有通道，因此你不能用一个基于通道的布线器。
They do not allow two-layer routing and have no channels, so you cannot use a channel-based router.
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