The unmanned combine harvester was developed using GPS, IMU, and machine vison.Especially, machine vison is the key to d......

本文利用非线性泛函分析拓扑度理论与常微分方程定性分析相结合的方法讨论了奇点为非双曲型时高维自治系统周期轨道的存在性，得到了......