pan
to
graph
复数形式
pantographs
1
缩放仪, 比例缩放复制装置
mechanical device used to copy a figure or plan on a different scale
2
受电弓, 集电弓
a component of an electric train that connects it to overhead wires for drawing power
A pantograph is a device used on electric trains to collect electricity from overhead power lines. It is a lightweight, hinged structure that extends upward from the train to make contact with the wires above. The pantograph slides along the power lines, allowing the train to draw the electricity needed to run the motor. Pantographs are commonly found on high-speed trains or electric locomotives, where they provide a continuous power source while the train is in motion. They are designed to be flexible and can automatically adjust to different heights of power lines.
- The pantograph on an electric train extends upwards to make contact with the overhead wires, ensuring continuous power supply.
电力列车上的受电弓向上延伸以与架空电线接触，确保持续供电。
- Engineers design pantographs to withstand varying speeds and weather conditions, maintaining reliable electrical connections.
工程师设计受电弓以承受不同的速度和天气条件，保持可靠的电气连接。
- Train operators regularly monitor the pantograph's position and contact pressure to optimize power transmission.
火车操作员定期监测受电弓的位置和接触压力以优化电力传输。
- Modern trains often feature automated pantographs that adjust automatically to ensure efficient power collection.
现代火车通常配备自动受电弓，可自动调整以确保高效集电。
- Maintenance crews inspect pantographs regularly to prevent wear and ensure safe and efficient train operations.
维护人员定期检查受电弓以防止磨损并确保列车运行的安全和效率。