Sterilization and computer: what they have in common

1. Step 1. Sterilization — uses — Autoclave. Sterilization by steam.
2. Step 2. Autoclave — has part — Boiler. A steam generator.
3. Step 3. Boiler — is part of — Excavator. The first excavators were steam-powered.
4. Step 4. Excavator — has part — Hydraulic cylinder. Hydraulic cylinders move the boom and the bucket.
5. Step 5. Hydraulic cylinder — is part of — Flight simulator. A motion platform.
6. Step 6. Flight simulator — uses — Computer. Modern simulators are computer-based.

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