Milling machine knee and solar panel: what they have in common

1. Step 1. Milling machine knee — is part of — Milling machine. A lifting support for the table.
2. Step 2. Milling machine — uses — Cemented carbide. Milling cutters.
3. Step 3. Cemented carbide — is made of — Tungsten. Tungsten carbide.
4. Step 4. Tungsten — is material for — Ion thruster. The cathodes are tungsten.
5. Step 5. Ion thruster — has part — Solar panel. Power supply.

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