Glass bottle and turbojet engine: what they have in common

1. Step 1. Glass bottle — includes — Soda siphon. A soda siphon is a strong bottle charged with carbon dioxide.
2. Step 2. Soda siphon — has part — Valve. A valve.
3. Step 3. Valve — is part of — Ventilator. Valves.
4. Step 4. Ventilator — has part — Compressor. A compressor or turbine.
5. Step 5. Compressor — is part of — Turbojet engine. The compressor compresses the air.

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