Jack and particle accelerator: what they have in common

1. Step 1. Jack — has part — Check valve. Check valves.
2. Step 2. Check valve — is part of — Vacuum pump. Valves stop air from flowing back.
3. Step 3. Vacuum pump — uses — Vacuum. The pump creates a vacuum.
4. Step 4. Vacuum — is used in — Particle accelerator. A vacuum chamber.

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