pantograph

n.

缩放仪，伸缩绘图器；放大器；

Pantograph/Catenary Dynamics and Control
Pantograph/Catenary Dynamics and Control
Pantograph and catenary dynamics: A benchmark problem and its numerical solution
On the generalized pantograph functional-differential equation
Numerical Simulation of Pantograph-Overhead Equipment Interaction
The pantograph: a large workspace haptic device for multimodal human computer interaction
The pantograph: a large workspace haptic device for multimodal human computer interaction
Printing system, process, and product with a variable pantograph
DEVICE FOR DETERMINING THE PRESSURE BETWEEN A CONTACT WIRE AND A PANTOGRAPH
A procedure for the wear prediction of collector strip and contact wire in pantograph–catenary system