Nebulizer mask and rolling mill: what they have in common

1. Step 1. Nebulizer mask — is part of — Nebulizer. Aerosol delivery.
2. Step 2. Nebulizer — has part — Compressor. A compressor.
3. Step 3. Compressor — is part of — Gas turbine. A compressor.
4. Step 4. Gas turbine — has part — Turbine. A turbine.
5. Step 5. Turbine — evolved from — Water wheel. The water turbine evolved from the water wheel.
6. Step 6. Water wheel — is used in — Rolling mill. The first mills were turned by water.

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