trackless trolley

1. A trackless trolley; the trackless snowy meadow.
   无轨的电车；没有痕迹的被大雪覆盖的草地。
2. Research on Straight-moving Emulation and Control Algorithm for Trackless Trolley Based on Magnetic Wire
   基于磁诱导线的无轨移动货架直线控制方法研究
3. According to the structure and moving way of the trackless trolley, both the 3D Kinematics emulation of self-navigating trolley based on OpenGL and the straight movement control algorithm, are researched.
   针对无轨化台车货架的结构和移动方式，对基于OpenGL的自导航台车三维运动仿真及其直行控制算法进行了研究；

noun

1. a passenger bus with an electric motor that draws power from overhead wires

   Synonym:    trolleybustrolley coach