Universal gravitation and turbojet engine: what they have in common

1. Step 1. Universal gravitation — is used in — Hydroelectric power station. The energy of falling water.
2. Step 2. Hydroelectric power station — has part — Water turbine. Water turbines.
3. Step 3. Water turbine — is a kind of — Turbine. A kind of turbine.
4. Step 4. Turbine — is part of — Turbojet engine. The turbine drives the compressor.

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