Extrusion and fitness tracker: what they have in common

1. Step 1. Extrusion — uses — Hydraulic press. Presses.
2. Step 2. Hydraulic press — is used in — Tablet (medicine). Tablets are pressed.
3. Step 3. Tablet (medicine) — uses — Chemical reaction. A tablet dissolves in the body.
4. Step 4. Chemical reaction — is used in — Airbag. The gas comes from an instant reaction of sodium azide.
5. Step 5. Airbag — has part — Accelerometer. The crash sensor is an accelerometer.
6. Step 6. Accelerometer — is part of — Fitness tracker. A pedometer.

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