弧集

In order to get out from the cockamamie work in road route design for designers, on the basis of studying the internal relations among local schemes, local scheme was decomposed to small unit logic schemes; the directed network was used to represent the topological connection; the united data structure of point-arc was used to express a network graph. Based on the shortest path theory, the combinatorial optimization algorithm that can search optimal logical schemes of some targets in the network graph intelligently and can form the whole scheme automatically was put forward.

为了使设计者从道路线路设计的繁重计算统计工作中解脱出来，在研究了局部方案间内在关联的基础上，提出了将局部方案分解为更小单位的逻辑方案，用有向网络图表示逻辑方案间的拓扑关系，采用节点－弧段联合数据结构来表示网络图；同时基于最短路径理论，提出了在网络图中智能化搜索综合指标最优的逻辑方案集，自动形成整体方案的组合优化算法。

MOTOMAN SK-16 arc welding robot system with YASNAC MRCⅡ controller, welding power, wire-feeding structure, cooling system, V-plank and preheat system, it can accomplish continuous welding for multi-nipple fillet-welds of power boiler header .

MOTOMANSK -16弧焊机器人配用YASNACMRCⅡ控制器、焊接电源、送丝机构、冷却系统、V形支架和预热装置，通过示教再现的方式可完成电站锅炉集箱管接头多个角焊缝的连续焊接。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。