use pantograph in a sentence.
USSR electric trains have a similar design feature: it consists of two kinds of cars, one has pantograph and the other has some other equipment which makes it hum when it stands still on the station.
And they're always interleaved like this: chphphphphc (c - car with a cabin, p - car with pantograph, h - hummy car) I wonder if it ever caused logistical problems when assembling trains from cars.
It was interesting seeing electric trains too - the pantographs gave off amazing blue sparks that you normally don't get when the weather is warmer.
PS: Am I the only one worried by that strange pantographic construction that supports the tablet in 'laptop' mode?