Level frame and turbojet engine: what they have in common

1. Step 1. Level frame — is part of — Spirit level. A straight base ruler.
2. Step 2. Spirit level — uses — Universal gravitation. The bubble rises to the highest point.
3. Step 3. Universal gravitation — is used in — Hydroelectric power station. The energy of falling water.
4. Step 4. Hydroelectric power station — has part — Water turbine. Water turbines.
5. Step 5. Water turbine — is a kind of — Turbine. A kind of turbine.
6. Step 6. Turbine — is part of — Turbojet engine. The turbine drives the compressor.

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