Grain elevator and industrial robot: what they have in common

1. Step 1. Grain elevator — has part — Bucket elevator. A bucket lift.
2. Step 2. Bucket elevator — has part — Roller chain. A chain or a belt.
3. Step 3. Roller chain — is part of — Electric bicycle. The chain drive from the pedals remains.
4. Step 4. Electric bicycle — has part — Hub motor. A hub motor or a mid-drive motor.
5. Step 5. Hub motor — is part of — Mars rover. Hub motors.
6. Step 6. Mars rover — has part — Industrial robot. A robotic arm.

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