对生产线上的工位布置优化，解决NP难问题。求解最优平衡率下的工位布置，平衡个工位的负荷。达到人员精简和降低成本的目的。(Optimize the workstation layout and solve the NP-hard problem. The workstation layout under the optimal balance rate is solved, and the load of each station is balanced. Achieve the goal of streamlining personnel and reducing costs.)