Chain reaction and CNC machine: what they have in common

1. Step 1. Chain reaction — is used in — Nuclear reactor. A controlled chain reaction.
2. Step 2. Nuclear reactor — is part of — Nuclear icebreaker. A reactor plant.
3. Step 3. Nuclear icebreaker — has part — Propeller. Propellers.
4. Step 4. Propeller — uses — Screw. A propeller “screws” itself into the water, like an Archimedes’ screw.
5. Step 5. Screw — is used in — Lead screw. A lead screw is a screw.
6. Step 6. Lead screw — is part of — CNC machine. Ball screws move the tables.

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