3D printer and solar panel: what they have in common

1. Step 1. 3D printer — has part — Servomotor. Stepper motors.
2. Step 2. Servomotor — is part of — Industrial robot. Servo motors drive the joints.
3. Step 3. Industrial robot — is part of — International Space Station. The Canadarm2 robotic arm.
4. Step 4. International Space Station — has part — Solar panel. Solar panels.

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