例如，一种新的系统允许联合收割机向牵引拖车发送呼叫，以便司机可以在必要的时候卸载谷物。
A new system allows a combine harvester, say, to send a call over to a tractor-trailer so the driver can unload the grain as and when necessary.
上月晚些时候，一帮窃贼偷走了6牵引拖车的土豆和一满卡车来自佛罗里达种植户的黄瓜。
Late last month, a gang of thieves stole six tractor-trailer loads of tomatoes and a truck full of cucumbers from Florida growers.
在拖车运行时必须谨慎地操纵控制系统，否则牵引机就会被推倒。
Great care had to be taken with the control systems for a powered trailer because, when turning, it can push the tractor unit over.
拖车将被分成俩部分，在两个侧面连接到底座上，在任一原动机的牵引下进行移动。
Trailer will be in two parts and will be connected on two sides of the car body and will be moved with help of any prime mover.
分析了压缩天然气钢瓶拖车的充装压力、牵引车头与钢瓶拖车数量的确定，讨论了汽车加气站流程。
The determination of filling pressure for bottle trailer of compressed natural gas, and determination of amount of tractors and bottle trailers is analyzed.
分析了基于牵引操舵角的轮式拖车系统的运动跟踪特性，提出了两种满足牵引操舵角概念的机构模型。
The motion tracking characteristics of steering Angle based wheel trailer system were studied. Two mechanism models which satisfy the definition of the steering Angle were present.
带拖车的轮式移动机器人系统由一节牵引车拖挂若干节拖车构成，其运动轨迹具有单车体机器人无法比拟的复杂性。
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.
本文研究由一个牵引车和N - 1个拖车所组成的移动机器人系统的动力学。
In this paper, a wheeled mobile robot system consisting of a tractor and N-1 trailers is studied.
我们的配货网络-有三个在美国的配货中心-拥有一个由90辆牵引车和120辆拖车组成的车队，安全高效地把货物从我们的仓库送到我们的商店里。
Our distribution network - with three U. s. distribution centers - USES a fleet of 90 tractors and 120 trailers to move product safely and efficiently from our warehouses to our stores.
在小行星牵引任务中，引力拖车方法的优点是不依赖小行星特性、可靠性高，缺点是偏移能力有限。
The merits of gravitational tractor in asteroid deflections are its high reliability and independence of asteroid characteristics, and the demerit is its low deflection efficiency.
详细介绍了双转盘转向结构的参数优化方法、平板拖车牵引杆长度及挂钩位置确定方法、牵引车挂钩位置确定方法，并对产生跟随性误差的原因进行了分析。
This paper presents parameter optimization of double-table turning structure, determination of trailer's draw bar length and hook positions of both the trailer and tractor.
运用该方法测量出拖车的牵引中心线可以用于拖车的车轮定位，减少车轮轮胎的磨损，保证行车安全。
The towing center line of the trailer measured by the method can be used for the positioning of wheels of the trailer, reducing the abrasion of the wheels and ensuring the traffic safety.
运用该方法测量出拖车的牵引中心线可以用于拖车的车轮定位，减少车轮轮胎的磨损，保证行车安全。
The towing center line of the trailer measured by the method can be used for the positioning of wheels of the trailer, reducing the abrasion of the wheels and ensuring the traffic safety.
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