Cheminée et vacuum pump : ce qu'ils ont en commun
- Étape 1. Cheminée — fait partie de — Steam locomotive. Smoke from the firebox leaves through the locomotive's chimney.
- Étape 2. Steam locomotive — a pour partie — Watt steam engine. A steam locomotive is driven by a steam engine.
- Étape 3. Watt steam engine — a évolué de — Piston pump. The first steam engines (Newcomen’s) pumped water out of mines by driving pumps.
- Étape 4. Piston pump — a évolué en — Vacuum pump. Guericke adapted the piston pump to pump out air.