MESM and turbojet engine: what they have in common

1. Step 1. MESM — has part — Vacuum tube. About 6,000 vacuum tubes.
2. Step 2. Vacuum tube — includes — Magnetron. An electron vacuum device.
3. Step 3. Magnetron — is part of — Radar. The cavity magnetron made compact radar possible.
4. Step 4. Radar — is part of — Jet fighter. A radar.
5. Step 5. Jet fighter — has part — Turbojet engine. A turbojet.

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