Grill air vents e micrometer: o que têm em comum

1. Passo 1. Grill air vents — faz parte de — Grill. They regulate the airflow.
2. Passo 2. Grill — utiliza — Carvão vegetal. Charcoal.
3. Passo 3. Carvão vegetal — é material para — Gunpowder. Gunpowder is a mix of saltpetre, sulphur and charcoal.
4. Passo 4. Gunpowder — é utilizado em — Revolver. Gunpowder propels the bullet.
5. Passo 5. Revolver — utiliza — Interchangeable parts. Colt used machine production of interchangeable parts.
6. Passo 6. Interchangeable parts — utiliza — Micrometer. Precise measurement ensures interchangeability.

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