Destroyer and hydraulic press: what they have in common

1. Step 1. Destroyer — has part — Steam turbine. Turbines.
2. Step 2. Steam turbine — has part — Boiler. Steam from the boiler.
3. Step 3. Boiler — is part of — Steam hammer. A boiler supplies the steam.
4. Step 4. Steam hammer — evolved into — Forging press. Pressing instead of striking.
5. Step 5. Forging press — is a kind of — Hydraulic press. A press.

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