Plansifter and fuel cell: what they have in common

1. Step 1. Plansifter — is part of — Roller mill. Sieves that separate the milling products.
2. Step 2. Roller mill — has part — Electric motor. The roller drive.
3. Step 3. Electric motor — is part of — Hydrogen car. An electric motor.
4. Step 4. Hydrogen car — has part — Fuel cell. A fuel cell.

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