Squirrel-cage rotor and computer: what they have in common

1. Step 1. Squirrel-cage rotor — is part of — Induction motor. A rotor of bars closed by rings.
2. Step 2. Induction motor — has part — Ball bearing. Bearings.
3. Step 3. Ball bearing — is part of — CT scanner. The gantry turns on a bearing.
4. Step 4. CT scanner — uses — Computer. A computer reconstructs the image.

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