pantograph

• 一种机械装置，用于按不同比例复制图形或图纸，通常通过用描迹针描摹原图，另一只臂则同步再现其运动。也指电力机车顶部用于从架空接触网取电的受电弓。

A mechanical device used to copy a figure or plan on a different scale, typically by tracing the original with a stylus and having a second arm reproduce the movement.

1. Mechanical copying deviceC1formal

   A mechanical instrument used to copy a drawing, plan, or figure at a different scale, typically by tracing.

   缩放仪

   • The architect used a pantograph to reduce the blueprint size.
   • Artists once relied on a pantograph to reproduce sketches accurately.
   • The engineer adjusted the pantograph to enlarge the technical drawing.

2. Electrical current collectorC1formal

   A device mounted on the roof of an electric train or tram that collects power from an overhead wire.

   受电弓

   • The train's pantograph made contact with the overhead cable.
   • A spark flew as the pantograph connected to the power line.
   • Modern high-speed trains use a streamlined pantograph design.

   同义词panpanto