Extrusion and newcomen engine: what they have in common

1. Step 1. Extrusion — uses — Hydraulic press. Presses.
2. Step 2. Hydraulic press — has part — Hydraulic cylinder. Two cylinders of different diameters.
3. Step 3. Hydraulic cylinder — has part — Piston. The piston is moved by liquid.
4. Step 4. Piston — is part of — Newcomen engine. Atmospheric pressure moves the piston.

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