【机械工程】循环轨道汽车【生活】循环轨道汽车

sprocket, self-cleaning endless-track vehicle

endless-track steering by means of bogies

endless-track vehicles

endless-track rollers

for endless-track vehicles

endless-track steering by endless-track roller the endless-track rollers

endless-track steering by deflecting endless-track rollers

inflatable flexible tracks for endless-track vehicles