Road wheel et avion : ce qu'ils ont en commun

1. Étape 1. Road wheel — fait partie de — Chenille. Road wheels roll along the track and carry the vehicle’s weight.
2. Étape 2. Chenille — fonctionne comme — Roller chain. A track is a closed chain of hinged links driven by a sprocket; the principle is that of a roller chain, on a different scale.
3. Étape 3. Roller chain — fait partie de — Wright Flyer. The propellers were driven from the engine by bicycle chains — the Wrights were bicycle makers.
4. Étape 4. Wright Flyer — est un type de — Avion. The first aeroplane.

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