Machines How They Work - Season 1 Episode 9 Pianos, Vending Machines, and Rappels
- Genre :
- Année : 2016
- Réalisateur : Nathan Budd, Tom Ranson
- Acteur :
- Pays :
- studio :
- How does a piano, a vending machine, and a rappel really work? Go inside the incredible machinery behind these everyday objects to see their extraordinary inner workings.
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