循环约束 meaning in English

cyclic constraint

As a supplement to traditional detailed routing model it researches on detailed routing problem from a new point of view . using this detailed routing model can easily handle the cycle constraints in channel routing and interconnections of circuit modules which don ’ t border upon by transferring nets from layer to layer . by similar methods , channel area can be transformed into an ideal algorithm model to meet used channel routing algorithm and some error of global routing can also be amended
和传统通道布线模型相比,该模型复合采用通道布线层和区域布线层,通过层间线网转移的方法,可以克服传统通道布线算法中处理循环约束问题和处理不相邻模块间互连问题的困难,还可以把通道区域处理为满足各种通道布线算法的理想模型,并且可以灵活处理一些总体布线中的不理想之处。