Hyperboloid structure and aerosol can: what they have in common

1. Step 1. Hyperboloid structure — has part — Beam. Straight bars form a curved surface.
2. Step 2. Beam — is part of — Overhead crane. An overhead crane runs along a beam bridge under the workshop roof.
3. Step 3. Overhead crane — is part of — Steel works. Overhead cranes.
4. Step 4. Steel works — has part — Rolling mill. Rolling mills.
5. Step 5. Rolling mill — uses — Pressure. Squeezing with rolls.
6. Step 6. Pressure — is used in — Aerosol can. A propellant gas.

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