Is the wheeledtractor plant such an important strategic military object?
轮式牵引机真的是一个这么重要的军事战略目标吗?
2
When Zheng Huizhong was growing up in the Henan countryside, he was proud his father owned a three-wheeled farm tractor.
在河南农村长大的郑慧中,曾经因父亲拥有一辆三轮农用拖拉机感到自豪。
3
Tractor trailer wheeled mobile robot system is composed of a tractor and multiple trailers, its motion trajectories are much more complex than that for single body robot.