Paul hooked his tractor to the car and pulled it to safety.
保罗把他的拖拉机挂在那辆小汽车上，然后把它拖到安全的地方。
Safety of the tractor transmission excited by non-stationary random dynamic load is explored.
本文探讨非平稳随机动载荷作用下的拖拉机传动系统的安全性问题。
Safety of the tractor transmission excited by non-stationary random dynamic load is explored.
本文探讨非平稳随机动载荷作用下的拖拉机传动系统的安全性问题。
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