Antikythera mechanism and truck: what they have in common

1. Step 1. Antikythera mechanism — has part — Gear. The mechanism contains at least 30 bronze gears.
2. Step 2. Gear — is part of — Differential. It consists of bevel gears.
3. Step 3. Differential — is part of — Truck. Differentials in the drive axles.

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