Steel cord and piston pump: what they have in common

1. Step 1. Steel cord — is part of — Radial tyre. Steel cord.
2. Step 2. Radial tyre — is a kind of — Pneumatic tyre. A kind of tyre.
3. Step 3. Pneumatic tyre — is part of — Landing gear. Aircraft tyres.
4. Step 4. Landing gear — has part — Shock absorber. Shock struts.
5. Step 5. Shock absorber — has part — Piston. Inside, a piston moves in oil.
6. Step 6. Piston — is part of — Piston pump. The piston draws in and pushes out liquid.

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