A mobile robot is one of the well-known nonholonomic systems. In this paper, a new adaptive tracking controller for the ......

<正> 自从《人工正电场使蔬菜增产的试验》在《长江蔬菜》1989年2期上发表后,各地读者纷纷来信询问架设电场的具体方法。本文综合......