The routing efficiency is guaranteed by delicately designed data structures and by the ability of searching around obstacles.
精心设计的数据结构及灵活的绕障探索方式可大大地提高搜索效率；多级多遍优化策略为改善布线结果提供了可靠的保证。
According to the analysis of friction of rope wraping stump, it makes farther explanation normal stress is the only factor in the judging of maximum static friction (or sliding friction force) under the circumstances of definite friction.
通过对绕桩绳索摩擦力的分析,进一步说明在摩擦系数一定的情况下,正压力是决定最大静摩擦力(或滑动摩擦力)的唯一因素。
