Smart meter and centrifugal pump: what they have in common

1. Step 1. Smart meter — has part — Radio module and antenna. Data transmission.
2. Step 2. Radio module and antenna — is part of — Space probe. Communication with Earth.
3. Step 3. Space probe — uses — Multistage rocket. Launch.
4. Step 4. Multistage rocket — has part — Liquid-propellant rocket engine. Engines on every stage.
5. Step 5. Liquid-propellant rocket engine — has part — Centrifugal pump. Turbopumps deliver the propellant.

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