Montgomery has a120- year-old trolley system, called the Lightning Route, which circulates around the downtown area and is mainly used by tourists.

蒙哥马利的有轨电车系统——“闪电线”已有120年的历史，它环绕市区运行，乘坐的大部分都是游客。

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A mathematical modeling of trolley system with handstand is built. The characteristics of linear and nonlinear dynamics are researched and analyzed.

建立了倒立振子台车系统的数学物理模型，在此基础上完成了线性与非线性动力学计算，并对其进行了对比分析。

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Introducing the advantages and disadvantages of double-engine dragged trolley system, the paper describes a programmable controlled system for synchronic control of double-engine.

介绍电机车双机牵引的优点和存在问题。采用可编程微机控制作为双机牵引的控制系统。

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Network Rail said all the recommendations from that investigation had been adopted, leading to a new requirement that all trolley vehicles be fitted with a braking system.

BBC: Investigators and trolley

The boxes are rearranged so that those going to similar destinations, indicated by a system of coloured lettering, end up on the same trolley.

ECONOMIST: Management trends